If anything, I'm willing to recreate the page with more details than before, after using my own userpage as some sort of sandbox for said extra details (with the infobox template added in, that is).
And also Ed Bighead.
Again, quasi-dictator, and his personality is similar to those of Mr. Krabs, Rigby, Kevin from Ed, Edd n Eddy.
Yeah, no, this doesn't make any sense. You're basically saying that he isn't as bad as Edward (who actually has a page), which isn't true at all, because if anything, Lumpus has proven to be more sadistic than Edward, who's mostly just an anti-hero instead of a full-blown antagonist, especially given that Lumpus has even antagonized Edward himself (like the gnome episode). I'm willing to recreate the page, because I feel that Lumpus is enough of a douchebag to be considered a villain, especially given that he's already had his own villainy history.
Essentially, Lumpus is Camp Lazlo's version of Mr. Krabs. Sure, Patrick may have done bad stuff too, but nowhere near as bad of either Mr. Krabs or even Lumpus, and the latter's kidnapping of Heffer draws the line.