Jumpers is a frog that Francine befriends in "The Three Fs".
When Francine can't find anyone to spend time with her in the family pool, she befriends a frog that stops by. Francine's new companion draws the family interest briefly, but they lose interest the following day, so Jumpers leads her to more frogs just like him. She allows the frogs to take over the house, much of the annoyance of her neighbor, Greg, who is trying to rest up for a audition for a national news anchor. Due to lack of sleep, the audition goes poorly, so Greg attempts to sue Francine. Furthermore, the rest of the family, believing that Francine is taking her frog obsession too far, takes Greg's side in court, but not only does Greg lose his case, but she secures a restraining order against the family at Jumper's prodding, with whom she discovers she can converse.
The family seeks out the help of a herpetologist, who informs them that Francine is under the spell of a Brazilian Cuckoo frog, which gains control over their victims when they are ignored by their family, eventually using them to feed their tadpoles. Francine initially what gives herself over to the frogs, but when her family is trapped by the frogs as well, she manages to snap out of their spell and rescue them. Not willing to give up so easily, Jumpers and the frogs start to attack, until the herpetologist offers herself up as a sacrifice.
Jumpers is voiced by Jason Isaacs.