Manager-kun is the God of Bitchslaps, there to slap the women in place if they go too far off-script or off-brand when they should be pleasuring the clients. That is the role. They dress it up, but at the core, Manager-kun is Hololive's pimp.

I don't think that's the best representative, but these people thought that some mass-murdering clown that eats children was also great representation of what they really are and believe, too, so...