She is the daughter of Mr. Lockjelly, Jonathan Long's Boss. She only appears in the episode  in Season 2 but never makes another appearance. Jake meets her at a time when he is between both Rose and Danika, and they have a connection. She seemed interested in Jake, but nothing much develops.
She has freckles on her face, and long brunette hair in a ponytail held with a purple rubberband. She wears an orange and yellow long sleeved shirt purple skirt, and brown shoes.
- Bite Father, Bite Son (only appearance)
- "Hi, Marnie Lockjelly!"
- "So, I'll see you there tonight?"
- "Don't you think you've done enough father/son bonding for one day?"
- "Hey Jake, you've missed my party tonight."
- "I don't want an apology, just a rain check."