Mortimer is a pet bird that belongs to Kelsey. He is always seen atop Kelsey's head. Kelsey has had many other pet budgerigars, as seen in the pet cemetery scene in the pilot episode. Mortimer is also called 'trusty falcon' by Kelsey.
He is a Budgerigar, which is a species of parakeet. He is a male, because of the blue cere above his beak.
Mortimer is seen to be obedient to Kelsey, as seen in the first episode when Kelsey is teaching Mortimer to peck out the brains of her enemies, and Mortimer complied efficiently.
- Itch To Explore
- You're It
- Jessica Goes to the Creek
- Too Many Treasures
- The Final Book
- Sunday Clothes
- The Curse
- Dog Decider
|1. "Itch To Explore":||Appears||7. "Sunday Clothes":||Appears|
|2. "You're It":||Appears||8. "Escape from Family Dinner":||Absent|
|3. "Jessica Goes to the Creek":||Appears||9. "Monster in the Garden":||Absent|
|4. "The Final Book":||Appears||10. "The Curse":||Absent|
|5. "Too Many Treasures":||Appears||11. "Dog Decider":||Absent|
|6. "Wildernessa":||Appears||12. "Bring Out Your Best":||Absent|
- The name Mortimer is of French origin. In French the meaning of the name Mortimer is: Dead sea (a stagnant lake).
- Kelsey mentions that she has had 47 Mortimers in her life, and visits a grave site with Craig and J.P. in the Pilot. She also says this one was the only one who understood her, in the episode Wildernessa.