Rosewell Katie Starrison is a character in In a Locked Room, and a contestant in The Great Crossover Competition. She is one of Jelo's friends, the others being Gerry and Peter. She is roleplayed by JeloJellyJam.


Pre-Locked Rooms

Rosewell was born on May 15 in Echo Creek, California. When she was in kindergarten, she met Jelo, and they immediately became friends. They attended the same elementary school, high school and college, sometimes by coincidence.

When she was 19, she heard of the Locked Room Challenge while she was camping. When Jelo went near the entrance of the Locked Rooms, a Wizard Zombie jumped out of nowhere and started shooting spells at the campers. Rosewell hid, but she got sucked in the the rooms. However, she found herself in an empty Hot Room, and explored its mysteries. One time, she finally arrived at the Lair of the Dark Star and met her friends again. She was also surprised to see Rosalina, and was super excited.


Rosewell is a bit shorter than Jelo. She wears a grey sweater, beige pants, and jade sneakers. She has blonde hair and brown eyes. She also has a brown backpack full of stuff.


Rosewell is helpful, prepared, smart, confident, and optimistic. She helps everyone in the gang, especially her best friends Jelo, Gerry and Peter. On some occasions, she can be stubborn, and selfish, however she still puts her friends ahead of herself, though.

Rosewell is also skilled in self-defense. Her favorite weapons are boomerangs.


Rosewell owns a lot of items. She always keeps them in her backpack.

  • Boomerangs
    • These boomerangs have special powers, ranging from healing, attacking, exploding, and many more.
  • Blueprints and plans for any kind of situation.
  • Driver's license, construction license, and a lot of other licenses
  • Pair of scissors
  • Wrench, hammer, nails, drills, nuts and bolts, other construction tools
  • Wooden planks
  • Her phone


  • Jelo, Gerry, Peter and Rosewell are JeloJellyJam's main fanon characters.

Character Info

  • She likes stargazing.
  • She once wanted to meet Rosalina.
  • She wants to learn everything about space.
  • She, Peter, Gerry, Peach, Daisy and the Diazes are Jelo's neighbors.
  • Her favorite fast food is fries.
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