Tunnel into Adventure!
With the BULK Drill Machine

Dig deep into the action with this 113-piece LEGO Heroes set from 2014, featuring 2 minifigs ready to battle the beasts below Antropolis City!

🏛 Heroes
Set #44025

BULK Drill Machine

BULK Drill Machine is a stellar example of LEGO's mid-2010s action-figure mech design.

Before you buy

Who it's for
Ages 7+ · Beginner build Perfect for younger builders, Hero Factory fans, and quick-build enthusiasts
Build
113 pieces · about 0.5 hours Build time is an estimate.
Price
$14.99 list price · 13.3¢ per piece
Availability
Retired at LEGO
★★★☆☆ 3.8 community rating

Fans love the fun play features like the flip-over drill and the sturdy mech design, though some note that the limited part utility outside of action figures makes it a niche collector piece.

MSRP
$14.99
Best Price
$13.49
You Save
10% OFF
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📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

BULK Drill Machine is a stellar example of LEGO's mid-2010s action-figure mech design. Combining the rugged Hero Factory aesthetic with heavy industrial mining gear, this set delivers a compact, highly articulated vehicle packed with play value.

This set is perfect for Hero Factory fans, mecha enthusiasts, and nostalgic collectors. The 113-piece build comes together quickly, offering a robust four-legged chassis and a clever flip-over drill-to-laser feature that maximizes its combat capabilities on the tabletop.

Skip this if you prefer traditional system bricks or modern Technic complexity. Since it relies heavily on character and creature construction system (CCBS) limbs and specialized armor shells, its parts utility outside of similar mecha builds is somewhat limited.

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Try asking:
What makes the CCBS system used in BULK Drill Machine unique? How does this set compare to other Hero Factory Invasion From Below sets? Is the secondary market price of $59.50 justified for a 113-piece set? Can the armor and limb pieces be easily integrated into custom MOCs?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI
🧩
113
Pieces
⏱
0.5h
Estimated Build Time
📊
Beginner
Difficulty
Build Highlights:
  • Sturdy four-legged chassis design utilizing CCBS ball-and-socket joints
  • Clever flip-over primary weapon mechanism switching between a drill and a laser gun
  • Integrated cockpit with an opening armored visor for Bulk
  • Includes dual flick missiles for extra action play

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI
↑ Trending up since release
B+
Investment Grade
⏳ Retired
As a retired set from the niche but passionate Hero Factory theme, BULK Drill Machine has seen a steady rise on the secondary market, currently commanding around $59.50 compared to its original $14.99 MSRP. The combination of a named core character (Bulk), unique translucent neon-green elements, and classic 2014 action-mech styling gives it strong nostalgic appeal among collectors who grew up with the theme. While it lacks the massive mainstream investment footprint of Star Wars or Modular Buildings, the sealed and complete-in-box market for Hero Factory sets has tightened considerably over the years. Because these sets were frequently played with hard and had their parts mixed into bins, finding complete copies with instructions is becoming tougher, driving up the value for dedicated theme completionists.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Tunnel into the underworld with BULK Drill Machine!

Dig deep, BULK! The beasts have created a confusing maze of tunnels below Antropolis City. Use your mega 4-legged Drill Machine to tunnel directly towards the Queen’s lair. Clamp down the seat’s armored visor, extend the huge drill and power through the rock. But beware – there are wild jumpers hatching from cocoons everywhere. Shoot the dual flick missiles and flip the drill over to aim the massive laser gun into their path. Then fire your click shooter to fend off this leaping menace. Includes BULK mini robot with a weapon.

  • Includes BULK mini robot with a weapon
  • Features detachable top, detachable seat with opening armored visor, rotating dual-purpose drill/laser gun, 4 flick missiles, posable joints and translucent elements
  • Includes a click shooter for BULK
  • Also includes a cocoon and a jumper
  • Drill a shortcut to the Queen’s lair
  • Rotate the drill and take aim with the laser gun
  • Shoot the dual flick missiles
  • Flip out the sides of the cocoon to hatch a jumper
  • Make the jumper leap with a flick of your finger!
  • Target the jumper with BULK’s click shooter
  • Combine with 44023 ROCKA Crawler and 44027 BREEZ Flea Machine for an even bigger hero model using building instructions available at LEGO.com/herofactory
  • Switch the top of the BULK Drill Machine with the top of 44027 BREEZ Flea Machine or 44028 SURGE & ROCKA Combat Machine to confuse the beasts!
  • Stands over 9” (23cm) tall

⚖ Compare Similar Sets

Compared to standard System themes of the era, the Hero Factory Invasion From Below subtheme focused heavily on action figures piloting specialized mechs to combat underground beasts. While sets like 44027-1 BREEZ Flea Machine offer similar spider-like mobility, BULK Drill Machine stands out for its heavy-duty mining aesthetic and clever weapon-flipping gimmick.

2 Minifigures Included

The set includes Bulk featuring his Pearl Dark Gray Armor alongside a wild blue and lime Hero Factory Jumper beast. Both figures utilize specialized action-figure building systems rather than traditional minifigures, making them essential for completing the Invasion From Below character lineup.

📦 Parts Inventory

Official piece count
113
Parts cataloged in this inventory
49 unique parts, 101 pieces
Minifigures
2

The official piece count includes the 12 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Technic Axle and Pin Connector Angled Triple [120° Offset] Technic Axle and ...
Part #: 10288 1× Dark Brown
Windscreen 4 x 4 x 4 2/3 with Handle Windscreen 4 x 4 ...
Part #: 11289 1× Trans-Brown
Large Figure Cockpit Seat with Ball Joint Large Figure Cock...
Part #: 15353 1× Orange
Large Figure Creature Cocoon Petal with Black Base Pattern Large Figure Crea...
Part #: 15358pat0001 3× Trans-Light Blue
Launcher, Weapon Gun / Blaster / Shooter Mini Launcher, Weapon ...
Part #: 15391 1× Black
Launcher Trigger, Weapon Gun Trigger Launcher Trigger,...
Part #: 15392 1× Dark Bluish Gray
Technic Pin with Friction Ridges Lengthwise and Center Slots Technic Pin with ...
Part #: 2780 4× Black
Bar 4L (Lightsaber Blade / Wand) Bar 4L (Lightsabe...
Part #: 30374 4× Trans-Neon Green
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Technic Pin Long ...
Part #: 32054 2× Black
Technic Axle 5 Technic Axle 5
Part #: 32073 1× Light Bluish Gray
Technic Driving Ring Extension, 4 Ridges Technic Driving R...
Part #: 32187 2× Light Bluish Gray
Technic Beam 1 x 9 Bent (7 - 3) Thick Technic Beam 1 x ...
Part #: 32271 2× Orange
Technic Beam 1 x 4 Thin Technic Beam 1 x ...
Part #: 32449 2× Black
Technic Beam 1 x 3 Thick Technic Beam 1 x ...
Part #: 32523 2× Black
Technic Pin Connector Perpendicular Long Technic Pin Conne...
Part #: 32557 1× Black
Technic Axle 6 Technic Axle 6
Part #: 3706 1× Black
Technic Bush Technic Bush
Part #: 3713 2× Light Bluish Gray
Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Technic Cylinder ...
Part #: 41531 1× Pearl Titanium
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Technic Axle and ...
Part #: 42003 1× Light Bluish Gray
Technic Pin 1/2 without Friction Ridges Technic Pin 1/2 w...
Part #: 4274 2× Blue
Technic Axle Pin with Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 43093 2× Blue
Technic Axle 3 Technic Axle 3
Part #: 4519 1× Light Bluish Gray
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Bar 1L with Clip ...
Part #: 48729b 4× Black
Technic Pin Connector Hub Perpendicular 3L with 4 Pins Technic Pin Conne...
Part #: 48989 1× Light Bluish Gray
Arm Mechanical with Clip [Thin Support] Arm Mechanical wi...
Part #: 53989 2× Pearl Titanium
Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Light Cover 1 x 1...
Part #: 58176 2× Trans-Orange
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 1× Yellow
Cone 1 x 1 [Top Groove] Cone 1 x 1 [Top G...
Part #: 59900 4× Trans-Neon Green
Technic Pin 1/2 with 2L Bar Extension Technic Pin 1/2 w...
Part #: 61184 4× Light Bluish Gray
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 5× Trans-Neon Green
Technic Pin Connector Round [Slotted] Technic Pin Conne...
Part #: 62462 2× Black
Technic Link 1 x 9 Bent (6 - 4) Technic Link 1 x ...
Part #: 64451 2× Dark Bluish Gray
Cone Jagged, Drill Tip Cone Jagged, Dril...
Part #: 64713 1× Orange
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Technic Axle 1.5 ...
Part #: 6553 2× Black
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Technic Pin Long ...
Part #: 6558 5× Blue
Technic Axle 3 with Stud Technic Axle 3 wi...
Part #: 6587 1× Dark Tan
Technic Pin Connector Double with Bar [2 Holes] Technic Pin Conne...
Part #: 85940 2× Black
Large Figure Skeletal, Limb, 4L with Ball Joint on Axle and Ball Socket Large Figure Skel...
Part #: 90611 2× Black
Large Figure Skeletal, Limb with 2 Ball Joints, and Ball Socket Large Figure Skel...
Part #: 90617 4× Dark Bluish Gray
Large Figure Skeletal, Limb with Ball Sockets Large Figure Skel...
Part #: 90622 2× Black
Large Figure Skeletal, Torso with 9 Ball Joints, and 6 Holes, Medium Large Figure Skel...
Part #: 90625 1× Black
Large Figure Limb Cover, Size 5, Armor with Ball Joint Socket with Red Arrows, Orange Markings, and Hero Factory Logo Print Large Figure Limb...
Part #: 90639pr0031 2× Flat Silver
Large Figure Limb Cover, Size 4, Armor with Ball Joint Socket Large Figure Limb...
Part #: 90640 2× Pearl Titanium
Large Figure Limb Cover, Size 3, Armor with Ball Joint Socket Large Figure Limb...
Part #: 90641 4× Orange
Technic Axle Connector 2 x 3 with Ball Socket, Open Lower Axle Holes Technic Axle Conn...
Part #: 93571 2× Black
Technic Beam 1 x 3 with Ball Joint in Middle Technic Beam 1 x ...
Part #: 98577 1× Dark Bluish Gray
Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes Large Figure Weap...
Part #: 98585 2× Trans-Neon Green
Large Figure Limb Cover, Armor, Knee / Shoulder Large Figure Limb...
Part #: 98592 2× Pearl Titanium
🧱 Sticker Sheet for...
Part #: 17575 1× [No Color/Any Color]
An exceptional parts pack for CCBS builders, featuring highly articulated skeletal limbs, armor shell covers in orange and pearl titanium, and striking trans-neon green accents. Great for custom mechs and creature building, though traditional system builders will find limited crossover utility.

🛒 Where to Buy

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$14.99

💎 Notable Parts

Trans-Neon Green Plate Round 1 x 1 with Solid Stud (5x) $1.25
Orange Large Figure Limb Cover, Size 3, Armor with Ball Joint Socket (4x) $3.00
Trans-Neon Green Bar 4L (Lightsaber Blade / Wand) (4x) $2.00
Trans-Light Blue Large Figure Creature Cocoon Petal with Black Base Pattern (3x) $2.25
Pearl Titanium Large Figure Limb Cover, Size 4, Armor with Ball Joint Socket (2x) $1.80
Est. BrickLink Part Value
$10.30

💡 MOC Potential

🤖 Custom mechs and robotic mining exosuits utilizing the CCBS skeletal limbs
🚗 Post-apocalyptic buggies and multi-terrain exploration rovers
🌳 Alien subterranean creatures and multi-legged spider beasts

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📖 Building Instructions 3

BULK Drill Machine Instructions
44025_X_44023 + 44025 + 44027
Download PDF
BULK Drill Machine Instructions
BI 3022/32-65G 44025 V29
Download PDF
BULK Drill Machine Instructions
BI 3022/32-65G 44025 V39
Download PDF

Charts Inventory Statistics

51
Unique Parts
113
Official Piece Count
101
Cataloged Inventory Pieces
2
Minifigures
8
Spare Parts

The official piece count includes the 12 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Inventory Version: 1

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