- Full Name: Katja Rok
- Race: Trill
- Date of Birth: 2359
- Place of Birth: Trill
- Age: 28
- Gender: Female
- Telepathic status: N/A
- Height: 5' 8"
- Weight: 145
- Hair Color: Black
- Length of Hair: Long
- Eye Color: Grey
- Skin Tone: Pale
- Birthmarks, Scars: Trill Spots
- Build: Thin/Petite
- Carriage: Lightfooted
- Taste in Clothing (when off duty): Traditional Trill, Anything Silky
- Shoes: None if she can get away with it.
- Voice: Softspoken, never harsh
- Handedness: both
- Quarters: Shared, Cadet Dorm
- Favorite Room: Bedroom
- Habits: Likes to chew on an old Earth invention called 'gum'
- Mannerisms: Aloof, goofy, yet very loyal, finishes what she starts.
- Religion/Spiritual Devotion: Symbiants
- Hobbies and Pastimes: Gymnastics
- Likes: Science
- Dislikes: Mean or overly serious people.
- Ambitions and Goals: Graduate from the Academy.
- Achievements in Life: Winner of Various Science related competitions on Trill growing up.
- Disappointments in Life: Lost her best friend when she was murdered.
- Temperment: Calm, flirtatious, fierce when needed, pretty laid back
- Mental problems (complexes and phobias): Hesitant to get down to business when she thinks she can get out of it.
- Physical Limitations: Small and fairly light, she has problems with hard physical labor.
- Marital Status: Single
- Children: N/A
- Father: Azrir Jasten
- Mother: Katiya Jasten
- Siblings: None
Katja was born and raised on the Trill homeworld. She never wanted for anything, and lived the good life throughout her childhood. When she was 17, her best friend was murdered, and her entire world changed. Depression set in, despite her activities and impeding joining. To those around her, she seemed normal, but her mind had wandered and she had made the decision to leave the planet once her joining was complete.
Once away from the source of her pain, she found something to spend her time on, which eventually led her to Starfleet. At first, she was hesitant to join, but after considering her options, she soon embraced the idea. It would turn out to be the best choice that she had made since her friend’s death.