Since ares is supposed to be a robot, to quote my buddy... "transform that bitch and wreck some shit"
What if the warbot model temporarily transforms into some super tank with temp buffs plus abilities?
Meaning his speed is 5, the green smog can be his exhaust fume from the overdrive which is also poision to nearby units (nuking himself over and over basically)
Or maybe rather than HP regen, an armor buff? Since he is in tank form
Doesn't have to be these 'exact' stats just pointing in the general direction