GK pre taunting under Revan

Its possible that opposing JKR goes first and does direct focus on one of your toons. Then GMY goes with the +40% TM gain and does his AOE, which leads to enfys nest doing a counter.

If the counter critically hits, GK will have a taunt, by the time its your turn

I never seen it but what you said is probably what happened.

I ran JKR with GK in arena every day from JKR was first released until Darth Malak came along. Not once have I seen GK get pre-taunt. And I've played A LOT of JKR mirrors ... A LOT!