Morton "Big Mouth" Koopa Jr

Morton "Big Mouth" Koopa Jr, the second to youngest son of Bowser, is a seven year old Koopa. His personality can be loud and rowdy at time.

Super Mario Legacies
In SMLG, Morton is 7. He has a mindset of a video game character, specifically a Call of Duty character, and he treats real life like game and likes to scream his furniture catchphrase "I'm a watchdog!". He can also be very loud and obnoxious at times.

Hyena Hideout Kingdom
Big Mouth has a long name with a story behind it, his name is originated from Bowser's brother Morton Big Mouth Koopa Sr who would talk a lot in his youth. Since "Big Mouth" was Morton's nickname, Bowser decided to merge it into his son's name. Big Mouth is a loud, rowdy Koopa who has a dream of being a commentator at The Annual Koopa Olympics and a ringmaster at a circus. When he blabs his mouth too much, Bully would shut him up when he gets annoyed.