Opress is an attacker btw.
I have Fives at Gear 9 max abilities and stars and he is quite good. But my RG 5* gear 8 max abilities is the one keeping me in high arena positions - those damn Rey, FOTP, Leia, GS squads...
However I switched my RP (7* lvl72, G-VIII, 7,7,7) out for Fives to see how it works.
It seems, i no longer rely on dodging, because I backfire and slow, if he gets hit (RP does similar things with "gain turnmeter after evading an attack")
Just an overview: