Iron Man Hulkbuster vs. Thanos

2 parts come in a colour no other set has for that mould

• Hand Hulk - LeftDark Red
• Hand Hulk - RightDark Red

2 printed parts are only in this set

• Tile Round 2 x 2 with Arc Reactor PrintLight Bluish Gray
• Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle and Hulk Buster Face…Dark Red

4 parts appear in only a few other sets

• Mech Leg, Left, with Black PinDark Redalso in 71815 Kai's Source Dragon Battle
• Mech Leg, Right, with Black PinDark Redalso in 71815 Kai's Source Dragon Battle
• Cockpit 4 x 2 x 3 with Pin Hole, and 2 ClipsLight Bluish Grayalso in 71804 Arin's Battle Mech, 71805 Jay's Mech Battle Pack
• Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor)Dark Redalso in 76307 Iron Man Mech vs. Ultron, 76323 Avengers: Endgame Final Battle, 71846 The Fire Knight Mech, 71851 Kai's Dragon Mech Battle Pack

1 mould first came out in 2023, including in this set

• Cockpit 4 x 2 x 3 with Pin Hole, and 2 Clips

4 existing moulds first came out in their colour in 2023, including in this set

• Brick Special 2 x 5 with Slope, Studs on SideDark Red · ×2
• Mech Leg, Left, with Black PinDark Red
• Mech Leg, Right, with Black PinDark Red
• Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor)Dark Red