Not much to watch, but this is the gist. On the show Dean Cain was playing Supergirl's adopted father. He was honestly a big part of the show, with what felt like an obvious arc to play out over time. When he started losing his mind in public they decided to wash their hands of the situation and he just disappeared without a trace after helping a bunch of alien immigrants who are being "deported".
There is apparently more to it now, but I haven't watched the new season yet. I am sure it is hilarious as well.