episode 20 is the tribute to gingaman
hyuuga/bull black of the gingaman returns and thinks he should be the new gokai silver, but gai has a hard time exepting that possibility. at the same time, basco appears and tries to find hyuuga to gain the grand power of the gingaman for himself.
basco summons: dekamaster, wolzard fire, magimother
this is the first basco episode to feature gai, as well as the first time basco summons extra senshi.