The show is excellent in season 1, but somewhere in season 2 it started to feel like Rick & Mortyish..... Too much loose end left unexplained making me not able to take it any more serious than a cartoon, not that cartoons are any bad. I love Rick & Morty, but if it looks like a cartoon, why wouldn't I just watch cartoons? At least Rick & Morty runs deeper.
Also, season 3 the characters' emotion and thoughts were changing too fast without any real events, reason or struggling, they just turned bad, then turned good, turned bad again, and turned good, decided to adopt an alien baby, decided to abandon it, then took it back......