Zangoose is a Pokemon introduced in generation 3. It doesn't evolve nor can be evolved into. It is is well know for its rivalry with Seviper.
During TPI, Zangoose made an alliance with Gliscor, Ekans, Gastly and Sneasel. During the merge, he stayed with Gliscor and Gastly, but after Gastly's elimination, he only aligned with Gliscor and after Gastly's elimination, Lickilicky blindsided Zangoose, by making up a lie about him, giving him 15th Place. Zangoose was offered a place in Total Pokemon Action, which he accepted and is now currently competing in TPA.
Zangoose made his first appearance in Wave3436's first ever season:Total Pokemon Island as originally the Tyler of the season, but as it went on.He actually developed as a character on his own, he also had a hating relationship with Lucario, who was actually his brother making him Owen's pokemon.He was eliminated along with his new girlfriend:Lumineon in episode 6
In season 2, he didn't do anything for the entire season and had to be medically evacuated because of a stroke.
He didn't appear in seasons 3-7, however he did appear as a host for a commando challenge in Total Pokemon Humanized with his wife:Lumineon
He appeared in season 8:Total Pokemon Revenge, hating Lucario and Umbreon and holding a grudge against Lucario until his wife was eliminated in episode 4,causing him to go all out against Lucario.After talking with Lucario, he realized that Lucario still loves him as a brother and that he was better than him in some ways,as well as Lucario.He was eliminated in episode 5, but he became a changed person, ending the grudge he had with his brother once and for all.
He wasn't in season 9, but he did throw a huge party for his brother,Lucario winning the season.
He is scheduled to be in Season 10, with his wife and his brother competing as well