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Guys... In my opinion-
|—Blue giving his opinion before Mario called him a imposter on the first meeting|
Blue Crewmate was a member of Peach's crew. He was one of the two crew members who was falsely accused of being the imposter and launched into space.
After Mario found the Purple Crewmate's body, a emergency meeting was called. The Brown Crewmate accessed Blue of being the imposter for not talking. Before saying his opinion, Mario quickly concludes him for being the imposter. He is shot out the canon but is revealed that he wasn’t the imposter.
In SMG4 Movie: REVELATIONS, he appears as Anti-Meme version of him.
- It is unknown who voiced him.