Jack Sparrow is the main character and protagonist of the Pirates of the Caribbean series. He is a legendary pirate  and captain of the Black Pearl, which he lost to Barbossa in a mutiny and later regained after killing him. He was born on a ship during a typhoon, and his father was Edward Teague, a notorious pirate. He is known to be a trickster, having caused trouble for many people during his travels.

Jabal is a character in Ubisoft's action-adventure Assassin Creed and the leader of the Acre's assassin bureau. Due to Altair's loss of the Templar treasure, he is stripped of his rank and sent to Jabal and the other bureau leaders to investigate and assassinate nine Templar targets. Upon the retaking of Masayaf and the death of the traitor Al-Mualim, Jabal stayed loyally by Altair's side while many assassin's rebeled, still blind to Al-Mualim's betrayal.

Jingle is a character from the Animal Crossing series of games.

Joan is a character from the Animal Crossing series of games.

Jimmy is the son of Grand Theft Auto V's main character, Michael. He is 20 years old and best described as lazy, whiny and a pot-smoker.

Jacob Kimble is one of the main protagonists in Insomniac's Fuse.

Jonathan is a character from Shin Megami Tensei IV.