According to erubo's characters' bios, Ronaldo can manipulate and grant consciousness to dolls, so it's probably just some big teddy bear he brought to life. Seems he doesn't have much control over their personality though.
His name is Zotty. You can also see him in post #1385870.
What!? And you call yourself a man! Girls are all about the tits!What's with the sudden question?No, armpits.I've said it before.I'm an armpit guy.Hey Ronaldo. Are you an ass guy? Or a boob guy?Quiet down, pervert bear.Sideboob is nice and all, but for me enormous ones are-