|Family||Mr. Strytch (Father)|
|Likes||Blix (his assistant)|
|Voice Actor||Rob Paulsen|
Eustace appears in "Billion Dollar Boy," "King of Mars," "Jimmy Timmy Power Hour 3: The Jerkinators," "The League of Villains (episode)," and makes a cameo appearance in "Attack of the Twonkies" but is only seen for a very brief time in a movie theater watching Jet Fusion. His assistant is named Blix. Cindy had a crush on him in [Billion Dollar Boy" but Eustace doesn't return her feelings. Her crush might have ended in "King of Mars".
Eustace wears a red robe (with the letter "E" on it), black pants, and spats. He is voiced by Rob Paulsen.
- Eustace himself isn't that threatening as a villain (compared to the Junkman or Professor Calamitous) but his high amount of money allows to hire scientist to work for him. This is revealed in the Jimmy Timmy Power Hour 3.
- Eustance was a dangerous villain in is first appearance, but is now more of a comedic villain.
- He doesn't like the Candy Bar, due to it only having 3 stars, which is dumb.
- He might exist to teach kids that money doesn't buy everything, although it's not that likely.
- Cindy Vortex use to have a crush on him; though it's since then past.
- His butler, Blix is often used as an "abuse dummy" for his rage or to add to him being a comedic villain. In the episode Attack of the Twonkies Eustace is seen in the background watching a movie thus marking a cameo appearance.
- He is pretty much like The Fairly Oddparents character, Remy Buxaplenty who is voiced by Dee Bradley Baker, they are both are rich and evil and prefer to use money to get what they want.