Not much is know about Schnozmo, because he has only appeared in one episode. However, he would never hurt his brother on purpose, and he loves Cosmo a lot, to the point he would battle an octopus robot to save Cosmo and his family. He doesn't get along with her sister-in-law, Wanda, mostly because she doesn't trust him. His relationship with his nephew,Poof, isn't expanded a lot either, but he is surprised to see him, even asking "Who is this little guy?" only for Cosmo to reply "That's your nephew, Poof!". He has trouble remembering Timmy's name, calling him Harry, Jerry, among others. It's most likely he has no godchild. It is likely he doesn't get along with Jorgen von Strangle, since he fled from the restaurant, and he went after him. Also it is unknown what his relationship with Mama Cosma is like since we never saw them together, but it is likely she prefers Cosmo over him. Schnozmo is also older than Cosmo, since Cosmo is the last Fairy Baby to be born.
Description
He is a con man, and tricked Cosmo into giving him his wand, a jar of pickles, and a TV, to find and evil scientist who does not really exist as it was just a lie. But as gullible as Cosmo is, Schnozmo thought he'd never find out, but when Wanda followed him and Comso heard he was lying, his heart broke, and Schnozmo felt so sad for his little brother that he pretended to be a spy on a play made by Wanda, getting mauled along the way, just to make Cosmo believe in him again.
Trivia/Goofs
In The Gland Plan is established that Cosmo is an only child.