Zoey

Marie

Ignacio

Galen

Ollie

Tala

Quinn

Bodie

Teacher

British

Vampire Bodyguard

Francis

Woman

Bodyguard

The Narrator

African lady

Soft Bubbly

Southern

Robot

Hailey

French

Hood

Indian Girl Accent

A French Girl

Male Russian Accent

Irish

Triangle is a male contestant in Shape World. Triangle appears to be a dark blue equilateral triangle.It is unknown what he is really like due to his lack of appearance, but from what we've seen, we can assume that he is highly energetic and likes making jokes to people.Triangle's voice is similar to Barry's voice by both having a raspy voice.
In both versions of SW4, Triangle just appears to have a screenshot their character instead of an actual asset.

Triangle SW