I find him useful if paired with empire squad. His basic is nothing to walk home about but he has good speed and when he uses the imploder it basically allows all of your team to get an attack in before the next team does.
I've used him with
Vader (L)
Royal Guard
Lando
HK-47
Magma
This combo has been proven very effective. The highest leveled I have is Lando at 70 and the highest star of any of these characters is 5* (lando, magma and hk, --RG and Vader are 4*) and I've wiped out the last team of my gwar (maxed out lvl 72's) 2 days in a row now, which I thought was rather impressive since I expected them to lose.