- Acting for Two: Mamoru Miyano with the eponymous character, Mecha Wooser and Ultraman Zero during a crossover special.
- Actor Allusion: Wooser as the Galactic Pretty Animal in episode 7.
- And again in episode 8, with Wooser dressed as Joe Shimamura.
- Episode 9 gives us Hououin Wooser.
- Episode 4 of season 2 gives us Wooser dressed in Yogi's Perona costume.
- Darth Wooser floating around at the start of episode 7 and calling himself an Innovator.
- And later Wooser says "I'm not Gundam"!
- In Episode 2 of Season 3: "I love the internet! Trolling yesterday, trolling today, trolling tomorrow!"
- In Episode 10, Wooser says that he likes girls who seem to know a lot about Ikebukuro.
- Episode 12 of Season 3 sees Wooser Ascended to a Higher Plane of Existence, (i.e. becoming "the God of a New World"), and he didn't even have to kill anybody!
Trivia / Wooser No Sono Higurashi