A parody of The Terminator, he is very pathetic & wants to do anything for Mr. Boss. He is counted as one of the adult villains because he is one. Toilenator is one of the most recurring minor characters in the show, and had four episodes centered around him. His first appearance is Operation: N.O.-P.O.W.U.H. (New Orders- Pulverize Opposition Without Utilizing Hamsters) showing up at the Delightful Mansion From Down The Lane, where he auditioned to the Delightful Children From Down The Lane's program wishing to destroy Kids Next Door Sector V, but was rejected and thrown out the window. His first episode was Operation Q.U.I.E.T. & his goal in that episode was to disturb and attack Numbuh One, but stopped when Numbuh Five used Professor XXXL's perfect snowcone to make him slip. He also is the boss of the level in the videogame Op. VIDEOGAME, where he is the least-powerful villain, and the level you fight him is in Op. TUTORIAL, the first level. He was very easily defeated, and thrown out the window.
The only time he was seen outside the Sector V Treehouse with Sector V inside was in Operation: Q.U.I.E.T., where he yelled out "Kids Next Door! Prepare to be flushed by the mighty Toilenator!!!!!!Aauggghh!!", but Sector V were ignoring and reading comicbooks while Numbuh One used the self-defense unit & Toilenator was defeated twice, until he came back out of the Toilet (after Numbuh One used it!!!!) and tried to attack him, but slipped on Prof. XXXL's perfect snowcone.
Back in Operation: F.L.U.S.H., he had wanted to be with Mr. Boss so that he can go bowling with him on Tuesdays. However, when Mr. Boss, Crazy Old Cat Lady, Mr. Wink & Mr. Fibb, and Knightbrace arrived at the Sector V Treehouse, Toilenator thought they were Sector V in disguise and defeated them very easily.
He was proven to have supernatural powers with water, as shown in Operation: C.A.N.Y.O.N. where he made thunder clouds appear well he drained the "giant cereal bowl" liquid. He has been also shown to have telekinesis on more than one occasion. Other than those two powers of his, he has been deemed a pretty useless villain.
He,along with Common Cold,Stickybeard,Knightbrace,Mr.Boss,Crazy Old Cat Lady,& Mr.Wink & Mr.Fibb were the only villians left out of The Grim Adventures of The Kids Next Door.