51 books • 3 series
Overlord: The Undead King Oh!, Vol. 12 (Overlord: The Undead King Oh!, #12)
Overlord, Vol. 19 (manga) (Overlord Manga, #19)
Overlord, Vol. 18 (manga) (Overlord Manga, #18)
Overlord: The Undead King Oh!, Vol. 11 (Overlord: The Undead King Oh!)
Overlord, Vol. 16 (light novel)
Overlord: The Undead King Oh!, Vol. 10
Overlord, Vol. 17 (manga) (Overlord Manga)
Overlord, Vol. 15 (light novel)
Overlord: The Undead King Oh!, Vol. 9
Overlord, Vol. 16 (manga) (Overlord Manga, #16)
Overlord, Vol. 15 (manga)
Overlord: The Undead King Oh!, Vol. 8
Overlord, Vol. 14 (light novel)
Overlord: The Undead King Oh!, Vol. 7 (Overlord: The Undead King Oh!, #7)
Overlord, Vol. 14 (manga) (Overlord Manga, #13)
Overlord, Vol. 13 (light novel) (Overlord, #13)
Overlord, Vol. 13 (Overlord Manga, #13)
Overlord: The Undead King Oh!, Vol. 6 (Overlord: The Undead King Oh!, #6)
Overlord: The Undead King Oh!, Vol. 5
Overlord: The Undead King Oh!, Vol. 4
Overlord: The Undead King Oh!, Vol. 3
Overlord, Vol. 12 (light novel)
Overlord, Vol. 12
Overlord a la Carte, Vol. 3