He first appears in "Out on a Limo", where he serves as the main antagonist of the episode where he brainwashes Lincoln about how the good life is better without being with his sisters, but at the end of the episode, Lincoln accepts that he was wrong and rude with his sisters and Kirby, so he ends his friendship with Tetherby.
Tetherby was the heir to the tetherball fortune, so he's now a very rich man with his own mansion, and a private club just for the high-class. He also has his own limo and butlers.
Personality
He is a very smug and egocentric man, with no pleasure towards the poor, even his relatives. He only likes to hang with rich people, or people with limousines.
Appearance
Tetherby is a short, fat man, with fair skin, white hair, and a mustache. He wears a blue suit, with a red ascot, a white kerchief, a black top hat, khaki pants, and brown shoes. He also wields a black walking stick. When he's not on a trip, he wears a red dressing coat, and white slippers.
Trivia
He has a huge head similar to Pops and Mr. Maellard from Cartoon Network's Regular Show.
The Nick.com closed captioning for "Out on a Limo" constantly misspells his name as "Tetherbee".
His Polish name is Euzebiusz Kluczyk (ang. Eusebius Key).
