Definitely Ronin and Scorch. Both can be ridiculous to go up against if the right player uses them.

But if you want to be a tank go for legon

Thanks

I suggest using Legion as fire support for other frontliners instead of a head on main aggressive Titan, Legion is slow, I mean SLOW as fuck so he won't be able to get into cover most of the time without being absolutely punished by the opposing so let your teammates tank a majority of the damage for you so you can maximize your damage potential and probably hit the enemy like a truck.

I also suggest using Hidden Compartment and Turbo Engine for the kits, mostly Turbo Engine because Legion's main issue is being slow and unable to use any defensive moves to get enemies away from his face.