Mewwys are white seagulls with a blue head, green eyes, a yellow beak with a cyan stripe and a tiny blue feather with a red border on the top of their heads. Their wings are white with blue colored borders and white dots, and a white tail with cyan and blue stripes and white dots. They have tiny red legs with two yellow claws each.
NiGHTS: Journey of Dreams
Mewwys can be found in Pure Valley, Aqua Garden and Lost Park. When they see NiGHTS, they will try to grab and carry NiGHTS to the ground, making NiGHTS lose time and giving the Goodles the opportunity to escape with the NiGHTS Capture's keys.
Defeating a Mewwy will add 100 points for the player's score.
The Mewwy Mepians have a blue cone-shaped head with white stripes, blue eyes, a yellow beak with a cyan stripe, a regular Nightopian halo and a tiny white losangular feather on the top. They have a torso with a white top and yellow bottom, blue arms with yellow flipper-like hands, tiny white wings with blue borders and cyan spots and yellow bird-like feet with brown claws.
- Mewwy's behavior is almost identical to Kircle's from NiGHTS into Dreams, as both are third level Nightmarens who grab and drag NiGHTS to the ground. The only difference is that Mewwys don't explode nor damage NiGHTS once they make NiGHTS reach the ground.
- Mewwys are the only third level Nightmarens who don't appear in extra missions in Journey of Dreams.
- Mewwy is the only third level Nightmaren from Journey of Dreams who didn't get a description in the NiGHTS: Journey of Dreams Bradygames Guide.