Board Thread:Event Help/@comment-33431797-20171110212456/@comment-33728484-20171111112841

Yeah he's an LR, it says so on the banner ("Legendary Summon - SSR Goku Black can become an LR through Dokkan Awakening!"), people who follow the game's news online have been waiting for him for months (he was already available on the Japanese version of the game, which is six months ahead), and many have spent so much money trying to get him. The fact that you didn't know how lucky you've been is kind of ironic.

Anyway, yes, Hidden Potential should be priority number one. Bottom right path for characters that are SA10, or you plan to get to SA10 eventually, and top left path for characters that will probably stay at SA1. I'm not not sure what you mean by "attack", "health" and "defense", though... once you start giving someone orbs, all of these stats get increased, the choice of the path is what really matters (bottom right path gives the best boost, and can also give more additional or critical attacks, and the top left path also gives additional and critical attacks).