How many pieces are in the Onua - Master of Earth?

Onua - Master of Earth contains 108 pieces.

What age is the Onua - Master of Earth recommended for?

This set is recommended for ages 18+.

When was the Onua - Master of Earth released?

Onua - Master of Earth was released in 2015.

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🏛 Bionicle

Set #70789

Onua - Master of Earth

Name: Onua - Master of Earth
Brand: LEGO
SKU: 70789-1

Onua - Master of Earth is a solid entry in the 2015 Bionicle reboot.

🏆 Best For: Bionicle enthusiasts and younger builders interested in constraction figures. ⏱ 1.5 hr build 🧩 108 pcs

★★★☆☆ 3.8

Fans generally appreciate the updated design and articulation of Onua, but some find the build to be too simple compared to older Bionicle sets. The color scheme and weapon design are praised, but the gear function is considered somewhat limited.

Check price on Amazon

📝 Our Take

Onua - Master of Earth is a solid entry in the 2015 Bionicle reboot. This set provides a sturdy and poseable figure with a unique aesthetic that blends classic Bionicle elements with the new system. The gear function and weapon integration offer decent playability.

This set is perfect for Bionicle fans, especially those who appreciate the 2015 reboot. The build is relatively straightforward, making it accessible to younger builders, while the poseability and weapon features offer play and display value for older fans.

Skip this if you're not a fan of the Bionicle theme or prefer more complex builds. If you are looking for a more challenging constraction figure, consider some of the larger Star Wars constraction figures.

✨ New

Ask BlockTalk about this set

AI assistant with full set data

BlockTalk

Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the Onua - Master of Earth - building tips, investment potential, comparisons, or anything else!

Try asking:

How does this version of Onua compare to the original Bionicle sets? What are the best ways to pose and display this figure? How does this set fit into the larger Bionicle 2015 storyline? What is the long-term investment potential of this set?

🧱 Building Experience

🧩

108

Pieces

⏱

1.5h

Build Time

📊

Beginner

Difficulty

Build Highlights:

Simple and straightforward construction using Technic elements.
Integration of gear function for arm movement.
Unique weapon design and integration with the figure.
Good poseability for dynamic display.

📈 Investment Analysis

→ Price stable

B-

Investment Grade

⏳ Active

Onua - Master of Earth, as part of the 2015 Bionicle reboot, has moderate investment potential. The Bionicle theme has a dedicated fanbase, which can drive up the value of retired sets. However, the 2015 reboot was relatively short-lived, which may limit long-term appreciation. The set's piece count and unique elements contribute to its collectibility, but its overall value will depend on the continued interest in the Bionicle theme. Compared to other Bionicle sets, this one is more accessible, which may affect its rarity in the long run. Keeping the set in pristine condition with the box will maximize its potential value.

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

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Compared to other Bionicle sets from 2015, Onua offers a solid construction and unique color scheme. While other Toa might offer different weapon functions or elemental powers, Onua provides a balanced build and aesthetic. Collectors might choose this set for its earth-based theme and distinctive design. Compared to similarly priced constraction figures from other themes, Onua stands out due to its Bionicle heritage and gear-based action feature.

📦 Full Parts Inventory - 43 unique parts • 108 total pieces

Technic Pin Conne...

Part #: 10197 1× Dark Bluish Gray

Technic Pin Conne...

Part #: 15100 2× Black

Large Figure Foot...

Part #: 15367 2× Black

Technic Axle 5 wi...

Part #: 15462 2× Dark Tan

Large Figure Head...

Part #: 19049 1× Flat Silver

Large Figure Head...

Part #: 19050 1× Trans-Neon Green

Large Figure Mask...

Part #: 19077 1× Black

Large Figure Mask...

Part #: 19077 1× Pearl Gold

Technic Beam 5 x ...

Part #: 19086 1× Dark Bluish Gray

Large Figure Limb...

Part #: 19087 4× Pearl Gold

Large Figure Weap...

Part #: 19151 4× Flat Silver

Large Figure Mask...

Part #: 20251 1× Yellowish Green

Large Figure Weap...

Part #: 20252 4× Pearl Titanium

Technic Pin with ...

Part #: 2780 3× Black

Technic Axle and ...

Part #: 32013 1× Black

Technic Axle Conn...

Part #: 32039 4× Black

Technic Axle 2 No...

Part #: 32062 8× Red

Technic Knob Wheel

Part #: 32072 3× Black

Technic Knob Wheel

Part #: 32072 1× Yellow

Technic Axle 4

Part #: 3705 2× Black

Technic Bush

Part #: 3713 1× Light Bluish Gray

Technic Pin 1/2

Part #: 4274 8× Light Bluish Gray

Technic Axle Pin ...

Part #: 43093 1× Blue

Technic Axle 3

Part #: 4519 1× Light Bluish Gray

Technic Beam 1 x ...

Part #: 50923 4× Dark Bluish Gray

Technic Ball Join...

Part #: 53585 2× Black

Technic Beam 1 x ...

Part #: 60483 2× Black

Technic Pin Long ...

Part #: 6558 1× Blue

Technic Beam 1 x ...

Part #: 6632 2× Black

Large Figure Skel...

Part #: 74261 4× Dark Bluish Gray

Technic Pin Conne...

Part #: 87082 1× Black

Technic Axle 4 wi...

Part #: 87083 1× Dark Bluish Gray

Large Figure Foot...

Part #: 87841 1× Flat Silver

Large Figure Skel...

Part #: 90609 4× Black

Large Figure Skel...

Part #: 90612 1× Black

Large Figure Skel...

Part #: 90617 2× Trans-Purple

Large Figure Skel...

Part #: 90617 2× Dark Bluish Gray

Large Figure Skel...

Part #: 90625 1× Black

Large Figure Limb...

Part #: 90640 5× Black

Large Figure Limb...

Part #: 90640 4× Dark Purple

Large Figure Limb...

Part #: 90650 1× Flat Silver

Technic Axle and ...

Part #: 92907 2× Black

Technic Axle Conn...

Part #: 93571 5× Dark Bluish Gray

Large Figure Hand...

Part #: 93575 2× Black

Technic Beam 1 x ...

Part #: 98577 1× Dark Bluish Gray

Large Figure Ches...

Part #: 98604 1× Black

🧱 Sticker Sheet for...

Part #: 20199 1× [No Color/Any Color]

This set offers a good selection of Technic pins and axles, useful for MOC builders. The various armor pieces in black, dark purple, and pearl gold are valuable for creating custom Bionicle figures or robotic designs.

🛒 Where to Buy

💎 Notable Parts

Black Large Figure Limb Cover, Size 4, Armor with Ball Joint Socket (5x) $1.25

Dark Purple Large Figure Limb Cover, Size 4, Armor with Ball Joint Socket (4x) $1.00

Pearl Gold Large Figure Limb / Torso Cover, Armor (Toa Okoto) (4x) $1.60

Flat Silver Large Figure Weapon, Axe Head Half / Shoulder Cover, Armor (4x) $1.00

Dark Bluish Gray Technic Axle Connector 2 x 3 with Ball Socket, Open Lower Axle Holes (5x) $0.50

Est. BrickLink Part Value

$5.35

💡 MOC Potential

🤖 Larger, more complex Bionicle figures or mechs.

🚗 Earth-based vehicles using the existing armor pieces.

🌳 Terrestrial creatures or rock formations.

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

1 video found

BlockTalk AI

RolloutReviews gives a positive review of Onua - Master of Earth (70789), praising the appealing color scheme and new dark purple pieces. The reviewer notes Onua is the most complex of the Toa to build and compares the new version to the original and Nuva versions.

BIONICLE Review - 70789: Onua, Master of Earth (2015)

RolloutReviews • 44.0K views Review

What the Community Says

1 YouTube reviews

BlockTalk AI Summary

Reddit Reviews

No Reddit reviews found

YouTube Reviews

1 video

BIONICLE Review - 70789: Onua, Master of Earth (2015)

RolloutReviews

44.0K views Review

Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

Inventory Statistics

Unique Parts

108

Total Pieces

Minifigures

Inventory Version: 1

Dig Deep!
Unearth the Master of Earth

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LEGO March 2026 Sets Now Available on LEGO Shop

Onua - Master of Earth

📝 Our Take

Ask BlockTalk about this set

🧱 Building Experience

📈 Investment Analysis

⚖ Compare Similar Sets

📦 Full Parts Inventory - 43 unique parts • 108 total pieces

🛒 Where to Buy

💎 Notable Parts

💡 MOC Potential

📰 Bionicle News

Avatar: The Last Airbender in LEGO

The Bad Batch

LEGO March 2026 Sets Now Available on LEGO Shop