Mantaster? Man Taster? Why are you feeding men to the Splatoon idols? I didn't know origami was a thing in these games since I assumed it was all underwater and paper doesn't normally fold well when it becomes wet. It's, uh... you know. It's mushy.
I figured Big Man was added to be a sort of mascot character for the idols, but it seems like he is the glue of this team (at least according to your artwork).