Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece
and leave with the element ID LEGO asks for, or a link to buy the part.
187 pieces in 89 part and color combinations, plus 2 minifigures.
LEGO counts 188 pieces. This inventory comes from a separate parts catalog and lists 195, including the 8 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 RecessedBlack ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick Wedged, Curved Inverted 6 x 4Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic BushLight Bluish GrayPart 3713Element 6275844 or 62718171 spare in the box×2
Technic Pin Long without Friction Ridges - Single SlotLight Bluish GrayPart 32556aElement 4211709×1
Tile Special 1 x 1 with Clip and Straight TipsLight Bluish GrayPart 2555Element 4211369 or 2555194×1
Reddish Brown
6 pieces
Brick Wedged, Curved 1 x 2 x 2/3 No Studs, Wing EndReddish BrownPart 47458Element 4295427×3
Plate 2 x 6Reddish BrownPart 3795Element 4211247×2
Plate 2 x 8Reddish BrownPart 3034Element 4211211×1
Green
5 pieces
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]GreenPart 32064b×5
Tan
4 pieces
Plate 2 x 3TanPart 3021Element 4118790 or 302105×2
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)TanPart 3794aElement 379405×2
Trans-Red
4 pieces
Plate 1 x 1Trans-RedPart 3024Element 6513963 or 6252042×4
Trans-Yellow
4 pieces
Plate Round 1 x 1 with Solid StudTrans-YellowPart 6141Element 6514056 or 62402161 spare in the box×4
Blue
2 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Trans-Neon Green
2 pieces
Cone 1 x 1 [No Top Groove]Trans-Neon GreenPart 4589Element 618849 or 458949×2
Pearl Gold
1 piece
Tile Special 1 x 2 Grille with Bottom GroovePearl GoldPart 2412bElement 4490599×1
Trans-Brown
1 piece
Windscreen 10 x 6 x 2 CurvedTrans-BrownPart 45705Element 6507923 or 6262645×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 7780-1[No Color/Any Color]Part 56709Element 4297012×1
Minifigures
2 figures
Batman, Light Bluish Gray Suit, Black Cape and Cowl, Light Nougat HeadMinifigure, checked as a whole figure×1
Killer CrocMinifigure, checked as a whole figure×1
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for
the set number and each piece's element ID, the number printed beside the piece in the parts list at the back
of the instructions. This checker lists both.
Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from
older or second-hand sets.
Keep a record
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick
pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.