Sure, but whether he was really any more evil than the average Roman Emperor is debatable. Eye witness accounts don't describe any of the horrors associated with him, and the other accounts are generally written well after the fact...and describe not what Caligula did, but what -people said he did-. A key difference, when it was common to blackmail a predecessor when your own ascension was caused by assassination.

Not really important either way, obviously, but an interesting side note.