Board Thread:Questions and Answers/@comment-34368958-20180222225403/@comment-32271305-20180222232903

His best linking partner is Buuhan (who has a farmable SA, as you might know), but Kid Buu doesn't have any Ki links, so he needs 2-3 support units that give him Ki. You don't seem to have these units, so he'll have a hard time super attacking on his own team. I'd probably avoid building an Extreme INT team, for now.

You can, however, put him on a Rosé team, since he gives +3 Ki to all Extreme units. I'd keep LR Goku Black & Zamasu and LR Broly on one rotation, and Kid Buu on a different rotation with Omega Shenron (they share Big Bad Bosses, Fierce Battle and Brutal Beatdown).