The Adoring Fan does not exist in The Elder Scrolls IV: Oblivion. He is a character from The Elder Scrolls V: Skyrim (2011).
If you want a follower who won't leave you alone:
player.placeatme <baseID>. Xbox 360: No mods. Only vanilla followers.resetAI (PC) or load save.Play Skyrim if you want the Adoring Fan. Play Oblivion for deeper quests, spellcrafting, and the Shivering Isles.