Jazz if you have Optimus Prime synergy
Cheetor if you run Beast Wars team (must have Primal)
Barricade if you run Baycepticon team
Prowl when you dupe him
Kickback if you run Enforcers
Pretty much what @Gunz0 said. Individually though I’d do prowl or jazz. Prowl for power control and finishing a fight quickly, or jazz for endgame content and longer battles depending on your style. As mentioned though synergy is the decider. Again prowl probably gives the most flexibility in a 5 bot team, but depends on what you want them for
I used to use Barri for everything, but it seems that they really nerfed his backfire at some point. The % chance to inflict or something, i guess. It doesnt land on an enemy anywhere near as often as it used to.
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Cheetor if you run Beast Wars team (must have Primal)
Barricade if you run Baycepticon team
Prowl when you dupe him
Kickback if you run Enforcers
It's goddamn Prowl, for crying out loud.
But as time past I felt funny leaving Prowl on rank 4 so I ranked 5 him later on
Barricade has outstanding range and melee damage, plus SP2 that nicks an entire power bar.
But like all scouts, can't take a punch.
Cheetor, he's got an undamagable heavy, great damage output and feral strikes.
Best for AM, raids.
Jazz is 1 dimensional.
But effective.