Mark 31
PISTON
PISTON
Built by: Tony Stark for high-speed and power efficiency.
Purpose: Fast and efficient combat.
Materials: A mix of advanced alloys from Mark XXI and Mark XXX.
Features:
Supersonic flight capabilities.
Extended operational time without needing to recharge.
Notable Use: Part of the Iron Legion, used in the battle against Aldrich Killian and his Extremis soldiers.
Nickname: “Piston.”