John Paul "J.P." Mercer is the tritagonist of the Cartoon Network Series Craig of the Creek. He is a young boy who is most often seen near the creek with his best friends Kelsey and Craig. His first appearance was in the Pilot.
J.P. is tall compared to most characters in the series. He has light skin, a large head with proportionally smaller cheeks, black eyes and eyebrows, and red hair.
J.P. wears a long-sleeve orange and white striped V-neck, black shoes, and tan pants with a tear on his right knee.
J.P. is not the brightest when it comes to thinking things through. He'll eat random food off of the forest floor and not listen to instructions.
Despite his weak intellect, he is quite a caring person and loyal friend, especially when his friends are in need of his assistance.
- He has mentioned that he has a family cat name goo.
- He has a rash on his torso in the Pilot.
- His full name is John Paul, as revealed in the episode "You're It" when he states he is building a robot clone named Johnbot Paulthousand.
- J.P. said he has a tetanus shot.
- He is the oldest among his known friends.
- It has been revealed that J.P. is in middle school during the episode Sunday Clothes.
- He stated that he doesn't know how to breathe out his nose.
- Despite his attraction to dangerous stunts, he is only documented to break a bone once (his hand, as stated in Jextra Perrestrial).
- He has many similarities to Ed from Ed, Edd n' Eddy. They both are not too bright, wear a red and white striped shirt, they have two best friends, they both have a sister (J.P. has an older sister while Ed has a younger sister) and they both run in a similar fashion. He also somewhat resembles Rodney from Total Drama Pahkitew Island.
- In "Kelsey the Author" He finds some sayings offensive, despite of them not being vulgar words. Such as when Craig says "Forget the world!" J.P gasped "Language, Craig!
- Pilot (debut)
|1. "Itch To Explore":||Appears||17. "The Invitation":||Appears|
|2. "You're It":||Appears||18. "Vulture's Nest":||Appears|
|3. "Jessica Goes to the Creek":||Appears||19. "Kelsey Quest":||Appears|
|4. "The Final Book":||Appears||20. "Jpony":||Appears|
|5. "Too Many Treasures":||Appears||21. "Ace of Squares":||Appears|
|6. "Wildernessa":||Appears||22. "Doorway to Helen":||Appears|
|7. "Sunday Clothes":||Appears||23. "The Last Kid in the Creek":||Appears|
|8. "Escape from Family Dinner":||Appears||24. "The Climb":||Appears|
|9. "Monster in the Garden":||Appears||25. "Big Pinchy":||Appears|
|10. "The Curse":||Appears||26. "The Kid from 3030":||Appears|
|11. "Dog Decider":||Appears||27. "Power Punchers":||Appears|
|12. "Bring Out Your Beast":||Appears||28. "Creek Cart Racers":||Appears|
|13. "Lost in the Sewer":||Appears||29. "Secret Book Club":||Appears|
|14. "The Future is Cardboard":||Appears|
|15. "The Brood":||Appears|
|16. "Under the Overpass":||Appears|
- Jextra Perrestrial
- The Takeout Mission
- Dinner at the Creek
- Jessica's Trail (flashback)
- Bug City
- Deep Creek Salvage
- The Shortcut
- Dibs Court
- The Great Fossil Rush
- The Mystery of the Timekeeper
- Alone Quest
- Memories of Bobby
- Jacob of the Creek
- Return of the Honeysuckle Rangers
- Kelsey the Elder
- Sour Candy Trials
- Fort Williams
- The Other Side
- Summer Wish
- Turning the Tables
- Kelsey the Author
- Council of the Creek
- Sparkle Cadet
- Cousin of the Creek
- Camper on the Run
- Stink Bomb
- Evolution of Craig
- The Haunted Dollhouse
- Craig and the Kid's Table
- Creek Daycare
- Sugar Smugglers
- Tea Timer's Ball
- Sleepover At JP's
- Craig of the Car
- How Was Your Day?
- The Williams Family Opening Theme Song
- How to Map the Creek
- Creek Kid Rap
|Craig of the CreekCharacters in|
|Main characters||Craig • J.P. • Kelsey • Mortimer|
|Supporting characters|| Williams family: Bernard • Duane • Earl • Jessica • Jojo • Carter Brown
Mercer family: Laura Mercer
Bern family: Mr. Bern
Creek kids: 10 Speeds (Handlebarb, Warpspeed, Todd, Cannonball) • Horse Girls (Mackenzie, Melissa, Maney, Marie) • Junk Lord • Kit • Sewer Kids (The Sewer Queen, Frisboy, Scuba, AquaTina, Tiny Trunks, Speedicous) • Stacks • The Elders (Barry, Mark, David) • The Junior Forest Scouts (Jason, Tony, Boris) • The Ninja Kids (Yustice, Zatch, Prinda) • The Paintballers (Paintball Mike, Paintball Benny) • The Scratchless • The Witches of the Creek (Tabitha, Courtney) • Wildernessa • Cheesesticks • Tea Timers (Eliza, Jane, George) • Toman