Jerry (Days of Future Future)

Jerry is the alien boyfriend of Jenda in the future.

History
Bart was upset that Jenda had moved on after their divorce and he hadn't moved on yet so he didn't like Jerry that much, despite Jerry acting friendly towards Bart. After Jenda bought a salt water tank for Jerry to shed his skin in, Jerry broke up with her and moved out. After Bart and Jenda's failed attempt at giving their relationship another go, Jenda got back with Jerry.

Behind the Laughter
Jerry appears to be based on the aliens from the Alien franchise.