1: [Young]
The Mimic has a gimmick: it can masterfully recreate the musical parts of any other Monster that it hears. Well, "masterfully" isn't exactly the word we'd use - especially not when it's still just a hatchling. It's a work in progress, but once the Mimic is a little older and the eggshell has been cast off, watch out…
2: [Adult]
In addition to parroting the music of its fellow Monsters, the full-grown Mimic has another trick up its sleeve - it can shapeshift to disguise itself and take on the form of other beings! Attempts to teach this skill to other Monsters have so far proved unsuccessful.