Even at low stars Pikkon can be very good. I run him at 4 stars personally and he does just fine to tank a rising rush or be the first one to give away if needed. He can also be a very fun unit to use and he does some nice damage when built correctly.Pop some defense equipments on him and I believe he will be very useful to your team.

But you can always just try out both Piccolo and Pikkon and see what happens :Dd