Sonic Robot (6750-1) is a Classic Space LEGO set released in 1986 with 107 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Classic Space sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 2 minifigures and 44 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1986 (40 years ago — may be retired)
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Catalog scale
107 parts listed · 44 inventory lines tracked
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Minifigures
2 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~151 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Minifigures in Sonic Robot
Parts in this set
44 parts · updating…
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Antenna 1 x 4 with Rounded Top3957a · ×2 · Trans-Red -
Arm Grab Jaw4221 · ×4 · Black -
Arm Grab Jaw Holder, 3 Fingers4220 · ×2 · White -
Arm Holder Brick 2 x 2 with Hole and 1 Arm792c02 · ×2 · White -
Arm Piece Straight with 2 and 3 Fingers3612 · ×8 · White -
Arm Piece with Towball Socket, 3 Fingers3613 · ×2 · White -
![Bar 1 x 3 [Clip / Anti-Stud]](https://cdn.rebrickable.com/media/parts/elements/4141580.jpg)
Bar 1 x 3 [Clip / Anti-Stud]4735 · ×2 · Black -
![Battery Box, 9V Small [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/15/4760c01.png)
Battery Box, 9V Small [Complete Assembly]4760c01 · ×1 · White -
Bracket 2 x 2 - 2 x 23956 · ×4 · White -
![Bracket 3 x 2 - 2 x 2 [aka Space Seat]](https://cdn.rebrickable.com/media/parts/elements/6024078.jpg)
Bracket 3 x 2 - 2 x 2 [aka Space Seat]4598 · ×2 · White -
Brick 1 x 2 with Black Grill Print3004pr9981 · ×1 · White -
Brick Round 1 x 1 with Fins, Open Stud4588 · ×2 · Trans-Red -
Brick Round 1 x 1 x 2/3 Light Bulb Cover4770 · ×1 · Trans-Red -
Brick Round 1 x 1 x 2/3 Light Bulb Cover4770 · ×1 · Trans-Yellow -
Brick Round 1 x 1 x 2/3 Light Bulb Cover4770 · ×1 · Trans-Green -
Brick Sloped 33° 3 x 14286 · ×2 · White -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×2 · White -
Brick Sloped Inverted 45° 2 x 2 with Computer Screen and Right Side Buttons Print3660pr0001 · ×1 · White -
Brick Special 1 x 1 with 3 Speakers / Loudspeakers / Space Positioning Rockets3963 · ×2 · White -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618841.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×2 · Trans-Red -
Construction Vehicle Bucket, Slope Inverted 33° 3 x 2 Hollow with Towball (Arm Piece)4089 · ×2 · Black -
Engine, Strakes, 2 x 2 Thin Top Plate4229 · ×4 · Black -
Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun4349 · ×4 · White -
Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube)73590c01a · ×2 · Trans-Yellow -
Lever Small Base with Black Lever298c02 · ×4 · Black -
![Light Brick 1 x 2 [Single Bulb]](https://cdn.rebrickable.com/media/parts/ldraw/15/73666.png)
Light Brick 1 x 2 [Single Bulb]4767 · ×1 · White -
Plate 1 x 13024 · ×3 · Trans-Green -
Plate 1 x 13024 · ×2 · Trans-Red -
Plate 1 x 23023 · ×5 · White -
Plate 1 x 33623 · ×2 · White -
Plate 2 x 33021 · ×4 · White -
Plate 2 x 4 with Electric Contacts4757 · ×1 · White -
Plate 2 x 63795 · ×1 · White -
Plate 2 x 8 with Electric Contacts4758 · ×1 · White -
Plate 6 x 63958 · ×1 · Black -
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)4032a · ×2 · Black -
![Plate Special 1 x 1 with Clip Vertical [Thin U Clip]](https://cdn.rebrickable.com/media/parts/ldraw/0/4085b.png)
Plate Special 1 x 1 with Clip Vertical [Thin U Clip]4085b · ×2 · Black -
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)3794a · ×3 · White -
Sound Brick, Round, 9V 2 x 2 x 1 1/3 with Two Space Noises4774c02 · ×1 · White -
Tile 1 x 2 with Arrow Long Yellow with Black Border Print3069bpr0023 · ×2 · White -
Tile 1 x 2 with Groove3069b · ×2 · White -
Tile 2 x 2 with Arrow Thin Yellow with Black Border Print3068bpr0032 · ×2 · White -
Turntable 2 x 2 Plate - Top3679 · ×1 · Light Gray -
Turntable 2 x 2 Plate, Base3680 · ×1 · Black