Phineasandferbsnail

,,,,SergeitheSnail,alsoknownasAgentS,isasnailagentworkingfortheO.W.C.A..ItwasbrieflyassignedtoHeinzDoofenshmirtzwhenDoofenshmirtzwas ...,Duetobeingaconesnail,hepossessesdeadlypoisoncapableofbringingdownenemieslargerthanhimself.Toovercomehisslowspeed,asheisasnail,he ...,Thinking'boutSergeitheSnailfromPhineasandFerbandhowDoofenshmirtzrecognisedhimimmediately,whichsuggestshe'sbeensenttodealwithHe...

參考資訊如下
Doofenshmirtz

Phineas and Ferb 149 Perry The Actorpus

Phineas and Ferb Sergei Gets Trapped Change Speed 0.85

Sergei gets trapped!

Sergei the Snail | Phineas and Ferb Wiki

Sergei the Snail, also known as Agent S, is a snail agent working for the O.W.C.A.. It was briefly assigned to Heinz Doofenshmirtz when Doofenshmirtz was ...

Serum the Snail | Phineas and Ferb Fanon

Due to being a cone snail, he possesses deadly poison capable of bringing down enemies larger than himself. To overcome his slow speed, as he is a snail, he ...

Thinking 'bout Sergei the Snail from Phineas and Ferb and ...

Thinking 'bout Sergei the Snail from Phineas and Ferb and how Doofenshmirtz recognised him immediately, which suggests he's been sent to deal with Heinz ...

Unfair Science Fair | S1 E23 | Full Episode

YARN | Snail! | Phineas and Ferb (2007)