Original Creator

Shinryaku! Ika Musume: Ika Ice Tabena-ika?
イ･カ･ア･イ･ス食べなイカ？

Shinryaku! Ika Musume: Kore ga Umi e no Ai Jana-ika!

Shinryaku!! Ika Musume
侵略!!イカ娘

Squid Girl
侵略!イカ娘

Squid Girl 2
侵略!?イカ娘

Squid Girl Specials
侵略!イカ娘 ミニイカ娘の番外編

Story & Art

Atsumare! Fushigi Kenkyuubu
Assemble! Mysterious Research Club
あつまれ！ふしぎ研究部

Shinryaku! Ika Musume
The Invader Comes From the Bottom of the Sea!
侵略!イカ娘