Bulwark

Profile
"I don't want to hurt you... but I won't let you hurt them."

Large and durable. Armed with a powerful cannon attached to his right arm. Unwilling to resort to violence unless absolutely necessary - even then, more willing to throw punches and ram into enemies than actually use his cannon. Transforms into a tank, enhancing accuracy but reducing speed. Extremely slow and energy inefficient, perhaps due to faulty engineering or millenia without maintenance.