DISC-FF

General Grievous : add this rage (Don't replace the other rage)
Boss rage : Unreleting Advance
Grievous will activate his four arms with his four lightsabers, rotating the two superiors to make the enemy retreat. While the ability is active (5 - 6 seconds):

-At this moment the taunt "Victory Lap" will be activated automatically
-All frontal damage are blocked and every damage done to him will be returned to his owner (40% Damage to his owner) (You can do damage behind him)
-50% Resistance (all kind of damage)
-200 damage per second if he reaches you (+engineer buildings and all kind of defenses like battalion) (+can push uber medics)
-Knockback Immunity
-No backstab
-No goomba stomp
Disadvantage:
-20% slower (or something similar to Demoman speed)
-20% mobility (that means its more difficult to turn around)
(I used Star wars battlefront 2 2017 as a reference)

While I do believe that it would take a lot of work (and possibly an entirely new model), I think this is something Grievous needs. While Battle Droids taunting and getting crits is powerful, Grievous has no real way to approach Engineer sentry nests, making Grievous absolutely useless on most maps that are very enclosed (like irongate). Having this rage would serve as a good counter and help make Grievous a more viable boss that could counter Sentry camping.
Also if his rage is changed, I'll have to make new voice lines for his rage.

Yeah, and also this 2nd rage will make Grievous be able to protect their minions.