Best charachters and gear for chewie event.

What about bane and ig88?? So get greedo to gear 11?

Not sure if 11 is enough. I barely did 7* Chewie with fully maxed zBossk, g12 bobba, g12 ig88, g11 dengar and g11 zGreedo. After 2 hours of tries I did it... you can try though...

Of those i'd say zbossk boba dengar greedo cad bane(for the stun). However as stated earlier g11 might not crack it easily you'll need a lot of patience and or luck. I used a mix of g12 and g11 and it took hundreds and hundreds of tries

IG-88 is squishy and in the Chewie event using his AoE is a no-go, since it feeds huge amounts of TM to the enemy.

Regarding gear: You can do it with less than g12. I got him 7* with g12 Boba lead, g11 Cad Bane, g10 Zam and Dengar and g9 Greedo. (I gave more gear to Zam and Dengar since).