Who to put with the Geonosians?

Stenun

So we have 4 Geonosians which means there is a slot left for another character to join them in the current Territory War.
Who?

I was thinking a droid, maybe, because they have synergy with them but no Droid really gives synergy back. My best idea so far is R2-D2 to try and stealth them to keep them alive long enough to kill the opposing squad.

Jpolson43

I put in B1. Assists all the time. Heal on special.

OmegaIV

I lead w General Greivous.