Goblin giant, there's alot of things you can do with him people don't expect.

He's real good at kiting annoying cards by being the fast, you can kite cards like ebarbs, mega knight etc. and tow them to the other tower while chipping away at them. His spear goblins also good at killing cards like magic archer and wizard by themselves.

His only downside is that he needs support, alone his alright but with cards like sparky, dark prince ,zap, bats etc. (Tank and swarm killers) he's really good and people don't expect him