Aren’t You a Fraidy-Squid? / You’re the Squid’s Sworn Enemy, Aren’t You? / Squidzooks! Aren’t You a New Recruit?

Opening Credits · OVA Opening | Let's☆Invasion Time! - ULTRA-PRISM

Opening Credits · S1 Opening | Shinryaku no Susume☆ (Let's Invade!☆) - ULTRA-PRISM with Hisako Kanemoto