The protagonist of Monster Musume is called Kurusu Kimihito, and while there's nothing remarkable about him, I still consider him to be a pretty good harem protagonist.
Again, going back to what I had said at the beginning of my review, Monster Musume takes the cliche personalities that many harems have and makes them their own.
While overall I rate the 30mins worth of clips as mediocre, I do appreciate giving us more details of the monsters, their traits, how they feel, and act.
Monster Musume no Iru Nichijou: Hobo Mainichi OO! Namappoi Douga 5. Bölüm İzle
Later, Kimihito also becomes the custodian of three more non-humans: a slime called Suu, an arachne called Rachnera Arachnera, and a mermaid called Meroune Lorelei.