“Nothing in the world can stop him once he starts moving — but inside that unstoppable body is a man shaped entirely by rejection.”
Once moving, no physical force can stop him. He punches through mountains and buildings — stopping him by force is simply not an option.
Physical strength in the Hulk and Thor tier — one of the most powerful physical combatants on Earth.
A helmet designed to block Xavier's telepathy — the irony being that his only real weakness is his mind.
Juggernaut is not a simple engine of destruction. He is Cain Marko — systematically sidelined by a stepfather who favored Charles, hardened into rage. He acts before he thinks, driven by impulse, but his loyalty to those he calls friends is absolute. The helmet blocks Xavier's telepathy, but it may also be blocking the voice of the wounded man inside.