Dragonster is a fearless and adventurous dragon who was still and poised for attack. He has a huge hulk of a body with brown, scaly skin that could slowly move up and down with each furious breath. His glaring turquoise eyes and his narrow cavernous nostrils flared. Dragonster was intimidating for even the bravest Psymonster to face.
He is a huge brown dragon with turquoise eyes, white horns, a peach underbelly, apricot wing sides and ear sides, sharp teeth, and a red forked tongue.
- Dragonster's name is a portmanteau from the words "dragon" and "monster".
- He resembles the Whiptail Dragon from Dragon Cave.
- Dragonster is the only dragon Psymonster with ears.
- Dragonster is one of the six Psymonsters who have elliptical eyes (the other five are Snakegrowth, Hideous, Deceased, Candyip, and Barbeetle).