Liked: The callbacks and self-referential humor
Four seasons in, Solar Opposites now has established canon, lore, and random recurring characters; while you don’t need to have watched seasons 1-3 to understand the jokes, it’s rewarding for longtime fans to revisit places like Wooden City (never was a place more full of wood or wood-themed puns) and people like the Red Goobler (now running a brewpub in San Diego, still angry as hell). This season’s script also sprinkles in self-aware references to things that happened in earlier installments, a self-indulgent but funny touch that borders on breaking the fourth wall at times.
