"It's all suction cuppy! And beaky!"
The giant squid is a creature lurking in the ocean off Danville's coast. It attacked Phineas and Ferb's submarine and nearly ate Biff, but was stopped by Buford who subdued the creature with a single punch. ("Voyage to the Bottom of Buford")
Buford found himself in yet another tussle against this squid when he'd attempted to harvest seaweed from the ocean. ("Spa Day")
- "Voyage to the Bottom of Buford" (First appearance)
- "Lawn Gnome Beach Party of Error" (Cameo)
- "Spa Day" (Cameo)
- "Last Day of Summer"(Cameo)(Appears in flashback(s))