Gameloft includes a brief description of Pegaster on their Monster Life mini site:
|“||Pegaster likes the simple things in life – wide open spaces, cool summer nights, and sugar cubes. Lots and lots of sugar cubes. She’s a pretty laid back gal, until you get her on the battlefield, that is – then she’s a chaos clobbering machine!||”|
An energized whipster works. Rockster is fine.