It seems the definition given is much more specific thsn the one used for the examples. The definiton used is "They look like a moron (or otherwise unimpressive) but are actually Bad Ass (or otherwise impressive)" but the one given is "...but actually have superpowers that activate in some situations, heralding a change of personality." Rather than removing all the examples, I'd suggest changing the definition to be broader, unless this concept is already covered somewhere else.

I would like to contest this example:

• The Order of the Stick. Xykon's Monster in the Darkness is this trope, acting childish all the time, but when he does show his power (often completely accidentally), he causes massive destruction.

That isn't this trope at all. Crouching Moron Hidden Badass requires a change in personality when the character's powerup is triggered, but the MITD is always the same ditzy, placid creature regardless of whether or not it's accidentally causing earthquakes by stomping too hard. That's more an example of Does Not Know His Own Strength.

Whatever happened to Crouching Scholar Hidden Badass? A lot of the examples would make more sense under that heading instead. I know it redirects, but the new trope is slightly different and gets conflated with Crouching Moron a ton.