In Spongebob and friends meet the Great Mouse Dectecive, he was Ratigan's pet, assuming that Ratigan and his thugs raided the transport truck while heading to new jersey after Ratigan somehow got to Amarica. He had the pleasure to serve as an exacutioner for Ratigan's enemies or any of his minions who called Ratigan a "rat", Savio finds it quite plesureable.
Savio was defeated by the Penguins (and Bert, the elephant, like before, who was transported to London by the aliens, Monty and Seven11) and he was mentioned by Abbot mouse that he was being transported back to the Hoboken Zoo in Amarica from which he came from and it was even shown in a clip from the ending of "The Big Squeeze" that he tried to scare Alice, (or at least a transporter worker who looks like alice) as she states, "This isn't New Jersey, tough guy!"
Despite him being defeated, Savio is expected to return along side with Deadpool and other villain leagers in Spongebob and Friends meet Oliver and Company. No one knows why did Savio betrayed Kaa, Lola Boa and Viper but it's highly likely that he doesn't know he has realitives or even thinks that Kaa and Lola are alive from the freak monsoon. It is unknown that if Savio is going to notice Kaa, Lola Boa and Viper in Spongebob and Friends Meet Oliver and Company. It is also unknown that if Savio is going to reform or not in order to joined up the the Shell Squad Lougers.