Refer to: Juggernaut (Classic)
Tier: High – Suggested Build: 5/5/3
Iron Man is not a terrible choice for your 1* character, and it may not be worth dropping him to develop a Juggernaut if you already have him developed. Iron Man is also not a big, ugly Dark Avenger.
Repulsor Blast does damage. It also doesn’t hurt your own character.
Armored Assault does less damage and creates a few (up to 4) protect tiles.
Ultra-Freon Beam does a lot of damage and stuns its target, for up to 3 turns. It also costs 19, so you probably will almost never find a use for this.