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Compatible with / aftermarket for products by Mattel, Inc. Not affiliated with, endorsed, or sponsored by Mattel, Mega Brands, or any franchise rights-holder.

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GNB21 · Skiff Intercept · BlokBlok

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Sets
Halo
Halo - Infinite
GNB21

GNB21

Skiff Intercept

Year released: 2020
Year discontinued: —
Pieces: 452
Figures: 4
Brand era: MegaConstrux
Weight: —
Retail price (USD): —

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Inventory

Looks complete (428/452 parts · 4/4 figs) — not verified

Minifigures4 logged· 4 types

×1Spartan MK VII - Metallic Green (Infinite)FIG-GNB21-A
×1

Item catalogued 2026-05-08. No community contributions yet. Be the first to suggest an edit, image, or inventory line.

Instructions

OfficialInstructions on service.mattel.com↗

Sources & cross-references (3)

Bloksforum threadhttps://bloksforum.freeforums.net/thread/4282/gnb21-skiff-intercept-2020 ↗
Mattel customer serviceGNB21 ↗
Mattel instruction PDFhttps://service.mattel.com/instruction_sheets/GNB21.pdf ↗

Banished Brute Warrior - Silver w/ Right Shoulder ArmorFIG-GNB21-B

×1Banished Grunt Conscript - Red (War Skiff)FIG-GNB21-C

×1Banished Brute Warrior - Silver w/ Left Shoulder ArmorFIG-GNB21-D

Parts428 logged· 133 types

×8Connector Brick 1 x 2 with axle holeAM79877APGGray, Steel
×1Slope Plate 45 2 x 2 wedge with mudguard, rounded, leftAM75151APGGray, Steel
×2Connector: pipe, small with pinMA74397FBlack
×2Connector: pin, small with perpendicular hand gripMA19650ALGGray, Dark Smoke
×3Plate 1 x 8MA18298AKMRed, Dark (Flake)
×4Plate 2 x 6MA1480APGGray, Steel
×2Hinge panel, small faceted vane on clipAM17869BTNSand, Dark
×2Hinge panel, small faceted vane on clipAM17869AKMRed, Dark (Flake)
×4Plate 1 x 5MA07475ALGGray, Dark Smoke
×2Connector: pin, short with clipMA17062AKMRed, Dark (Flake)
×3Plate 1 x 2 with backswept mudguard, rightAM75154APGGray, Steel
×1Weapon, Missile: launcher 1 x 1 x 3, friction launcherAM78599AWCGray, Dark (Metallic Camo)
×3Bracket 2 x 2 - 2 x 2 sloped with studsAM16653AKMRed, Dark (Flake)
×1Bar 1 x 6 Short Railing Fence with 2 StudsAM72033APGGray, Steel
×8Bracket Plate 1 x 2 with two studs on side, ascendingAM79070APGGray, Steel
×2Slope brick 33 2 x 3 curved slopeMA17021APGGray, Steel
×2Plate 1 x 6MA09292ALGGray, Dark Smoke
×8Brick 1 x 1 x 2 two-thirds height with curved slopeAM78486APGGray, Steel
×1Plate 2 x 4 wedge with notch, leftMA09487APGGray, Steel
×10Slope brick 45 1 x 1 with 1 x 1 plateMA18740AWCGray, Dark (Metallic Camo)
×2Gearing, wheel with 16 teeth and axle holeAM79702FBlack
×1Engine component: intake duct 4 x 4 round base w/ extended cowlAM72431ALGGray, Dark Smoke
×1Slope brick 33 3 x 5 double / 45 inverse, rightAM17007AKMRed, Dark (Flake)
×2MA01141MA01141APGGray, Steel
×3Figure, Halo: Covenant Hunter, headAS9683307MULMulticolored
×1Plate 2 x 4 with corner cut-outs & single stud at either endAM77180APGGray, Steel
×3Plate 2 x 6 wedge, rightMA72010APGGray, Steel
×1Plate 2 x 2 round with axle holeAM19646FBlack
×2Bracket Plate 1 x 1 with opposing side studsAM78273APGGray, Steel
×1Miscellaneous: blok separator ''building tool''AM80855MCXOrange, Marigold
×1Gearing, wheel with 12 teeth and axle hole partway throughAM80547BTNSand, Dark
×6Plate 2 x 2 cornerMA15484APGGray, Steel
×1Bar 1 x 4 Short Railing Fence with 2 StudsMA09931APGGray, Steel
×3Plate 2 x 6 wedge, leftMA72011APGGray, Steel
×2Slope brick 45 1 x 2MA1322BTNSand, Dark
×2Plate 4 x 4MA17054AKMRed, Dark (Flake)
×6Plate 2 x 2MA03773AWCGray, Dark (Metallic Camo)
×1Plate 3 x 6 with cutoutsAM17063ALGGray, Dark Smoke
×14Plate 1 x 1 - Type 04MA03328APGGray, Steel
×12Plate 1 x 3MA01314APGGray, Steel
×4Gearing, bushing, small with axle holeAM79915APGGray, Steel
×2Brick 4 x 4 round with axleholeAM15512ALGGray, Dark Smoke
×8MA01312MA01312FBlack
×5Plate 2 x 2 with rounded bottomAM17057WClear (Translucent)
×6Plate 1 x 2 with ball socket on end, smallAM80765ALGGray, Dark Smoke
×4Brick 1 x 1 x 2 curved slopeMA17788APGGray, Steel
×2Plate 1 x 1 with horizontal connector pipe, hollowMA76058APGGray, Steel
×3Wedge Plate 2 x 3 without corner, leftAM76206APGGray, Steel
×2Wedge Plate 2 x 3 without corner, leftAM76206AKMRed, Dark (Flake)
×2Plate 1 x 1 with one stud on side, descendingMA77574APGGray, Steel
×8Plate 1 x 2 with two studs on side, descendingMA76467APGGray, Steel
×4Plate 1 x 1 with one stud on side, ascendingAM79590APGGray, Steel
×1Weapon, Firearm: UNSC Bulldog ShotgunAM80853FBlack
×1Plate 12 x 16 wedge with raised 4 x 4 platform at one endAM80989AWCGray, Dark (Metallic Camo)
×8Plate Modified 1 x 1 round with horizontal pinMA1312FBlack
×2Weapon, Firearm: Covenant Brute Mangler with rotating drumAS-GNB21-07MMGray, Dark (Metallic)
×2Weapon, Firearm: Covenant Brute Mangler with rotating drumAS-GNB21-07MULMulticolored
×6Plate 1 x 1 with horizontal clipMA74415FBlack
×6Plate 1 x 2 with ball joint on end, smallAM78276ALGGray, Dark Smoke
×1Plate 8 x 8, newMA18556AWCGray, Dark (Metallic Camo)
×1Connector: axle 3 studs longAM79876FBlack
×4Plate 2 x 2 round connector: male:maleMA19380AKMRed, Dark (Flake)
×3Plate 3 x 3 without corner, front rightAM18282APGGray, Steel
×2Brick 1 x 3MA16384AWCGray, Dark (Metallic Camo)
×8Connector: pipe, small 3 studs long elbowMA74645ALGGray, Dark Smoke
×2Wedge Tile 1 x 3 Center Flat PointAM76450AWCGray, Dark (Metallic Camo)
×10Connector: pin, small with hand gripMA76060ALGGray, Dark Smoke
×2Tile 1 x 4MA09838APGGray, Steel
×4Tile 1 x 4MA09838ALGGray, Dark Smoke
×1Connector: pin, smallMA17003APGGray, Steel
×1Slope brick 33 3 x 5 double / 45 inverse, leftAM17008AKMRed, Dark (Flake)
×2Slope brick 45 2 x 2 inverseMA1154APGGray, Steel
×6Tile 1 x 2 with 1H tailMA18269AWCGray, Dark (Metallic Camo)
×3Plate 3 x 3 without corner, front leftAM18283APGGray, Steel
×1Slope panel 2 x 4 double taperedAM08416AWCGray, Dark (Metallic Camo)
×1Weapon, Missile: launcher 1 x 1 x 3, friction launcher, triggerAM78600AWCGray, Dark (Metallic Camo)
×1Wedge Plate 2 x 3 Mudguard - LeftAM17001APGGray, Steel
×1Weapon, Firearm: Type-25 Directed Energy, Covenant plasma pistolAM75907ARMPurple, Rich
×1Wedge Plate 2 x 3 Mudguard - RightAM17000APGGray, Steel
×2Tile 3 x 4 without left corner printed w/ battle damage detailAS-GNB21-03APGGray, Steel
×2Tile 3 x 4 without left corner printed w/ battle damage detailAS-GNB21-03MULMulticolored
×1Connector: axle 7 studs longAM80830FBlack
×1Plate 1 x 2 Connector: male:maleMA16680APGGray, Steel
×2Slope brick 45 2 x 1 double / 60AM19061ALGGray, Dark Smoke
×10Plate 2 x 4MA09493APGGray, Steel
×1Plate 2 x 4 wedge with notch, rightMA09488APGGray, Steel
×8Bracket 2 x 2 - 2 x 2 sloped with studs, inverseAM80890APGGray, Steel
×6Plate 1 x 4MA09593APGGray, Steel
×1Slope brick 45 6 x 6 corner roundAM76221APGGray, Steel
×1Slope Plate 45 2 x 2 wedge with mudguard, rounded, rightAM75152APGGray, Steel
×2Slope brick 45 1 x 2AM1322BTNSand, Dark
×2Wedge Plate 2 x 3 without corner, rightAM76205AKMRed, Dark (Flake)
×3Wedge Plate 2 x 3 without corner, rightAM76205APGGray, Steel
×3Weapon: Medium Shooter Ball joint on long pinAM78601AQDGreen, Ooze (Translucent)
×1Connector: axle 12 studs longAM80914FBlack
×3Slope brick 36 2 x 1 with open studs on slopeAM18272ALGGray, Dark Smoke
×2Bar 2 studs long with perpendicular pegsMA18597ALGGray, Dark Smoke
×1Plate 4 x 10 wedge, leftAM16648AKMRed, Dark (Flake)
×5Slope brick 36 1 x 1MA17127APGGray, Steel
×4Plate 1 x 2MA09393AKMRed, Dark (Flake)
×11Plate 1 x 2MA09393AWCGray, Dark (Metallic Camo)
×12Plate 1 x 3MA1314APGGray, Steel
×2Engine component: intake duct 1 x 3 curved slope w/ blue detailAS-GNB21-05MULMulticolored
×2Engine component: intake duct 1 x 3 curved slope w/ blue detailAS-GNB21-05APGGray, Steel
×1Plate 2 x 4 with studs at end and hole at centerAM79871AWCGray, Dark (Metallic Camo)
×8Plate 2 x 3MA03772APGGray, Steel
×2Plate 2 x 3MA03772AKMRed, Dark (Flake)
×9Plate 2 x 3MA03772AWCGray, Dark (Metallic Camo)
×2Slope brick 33 1 x 3 curved slopeMA07230AKMRed, Dark (Flake)
×2Slope brick 25 1 x 4 with studs on slopeAM77199AWCGray, Dark (Metallic Camo)
×1Plate 4 x 10 wedge, rightAM16647AKMRed, Dark (Flake)
×1Tile 1 x 2MA022501APGGray, Steel
×4Tile 3 x 3 corner with round cutoutAM78472APGGray, Steel
×1Shock RifleAM80852ATVBlue, Smoke (Flake)
×2Connector: pin, long with clipMA19617APGGray, Steel
×4Tile 1 x 2 printed with two transverse yellow stripesAS-GNB21-01APGGray, Steel
×4Tile 1 x 2 printed with two transverse yellow stripesAS-GNB21-01MULMulticolored
×4Plate 2 x 2 corner with rounded cornersMA16972APGGray, Steel
×4Engine component: intake turbine 3 x 3AM72240AAVBlue, Medium (Translucent)
×4Plate 2 x 6 irregularMA76357ANWSand, Dark (Camo)
×2Slope brick 45 2 x 1 double / 60 with vertical yellow stripeAS-GNB21-04APGGray, Steel
×2Slope brick 45 2 x 1 double / 60 with vertical yellow stripeAS-GNB21-04MULMulticolored
×3Plate 1 x 2 with backswept mudguard, leftAM75153APGGray, Steel
×1Plate 2 x 2 round with descending pegAM79018AWCGray, Dark (Metallic Camo)
×1Plate 2 x 4 with holes through corner studsAM79019AWCGray, Dark (Metallic Camo)
×2Slope brick 45 1 x 2MA01322BTNSand, Dark
×2Bracket 2 x 2 - 2 x 2 with studsMA1141APGGray, Steel
×1Cylinder 4 x 4.33 x 4 hollow with turntable mountAM17609APGGray, Steel
×2Tile 3 x 4 without right corner printed w/ battle damage detailAS-GNB21-02APGGray, Steel
×2Tile 3 x 4 without right corner printed w/ battle damage detailAS-GNB21-02MULMulticolored
×1Gearing, wheel with 12 teeth and axle holeAM79873FBlack
×1Slope, Inverted 25 2 x 2MA18223APGGray, Steel
×2Slope brick 36 2 x 1MA18549AWCGray, Dark (Metallic Camo)

Instructions1 logged· 1 type

×1Instruction booklet for GNB21 Skiff InterceptD-GNB21-01

Packaging1 logged· 1 type

×1Original packaging for GNB21 Skiff InterceptBOX-GNB21

Price history(last 6 months)

No completed sales in the last 6 months.