Board Thread:General Discussion/@comment-27996636-20181016093243/@comment-32271305-20181016145535

The Z works because it's simple, it has the same size as the other icons on the thumb, and it has a universal meaning. Those "Boost/Assimilation" images are very different and also more annoying to get, and they don't fit well on EZA Piccolo's thumb. Plus some of those are still in Japanese.

I think the flaming effect is ten times better.