A challenging one.
I used a Madcap head, re-sculpted everything, except the teeth.
Had a spare figure I had for the upper torso from an old custom that I felt was obsolete, took that in half, sculpted the figure both with the comic based detail & to remove the paint rub.
The Tank was a 1/35 scale Tamiya model kit Tank, a good scale for a Marvel Legends scale Bonebreaker lower body.
Repainted everything, gun was a spare 1/12 gun I bought in a bundle a while ago.

Head: Madcap head from X-Men Deadpool, heavily re-sculpted
Torso & Arms: Red Guardian with sculpt
Tank: 1/35 Scale Tamiya Tank
Painted with Citadel Paints

Hope you like it.