Jacob "Jake" Pinkman is Jesse Pinkman's little brother and the son of Adam Pinkman & Mrs. Pinkman. He has received many rewards for his achievements in school. Jake discusses his academic and musical success with his parents and Jesse. He plays the piccolo and also plays soccer. Mrs. Pinkman is uncomfortable with Jake being alone with Jesse, fearing that Jesse is a bad influence on his younger brother. Although Jesse thinks that Jake is the favorite son, Jake disagrees. He argues that all their parents ever talk about is Jesse.
When Jesse was staying at his parents' home, the house maid found a joint of marijuana in a small plant beside the bed Jesse was sleeping on. Mr. and Mrs. Pinkman assume it was Jesse's, however it was actually Jake's. Jesse takes the blame for Jake, but when Jake asks for the joint back, Jesse stomps on it to prevent his brother from smoking it and claims it was skunk weed. ("Cancer Man")
When the Pinkmans are selling Ginny's house, they talk about their disappointment in the price they sold the house for because they could no longer pay for Jake to go to space camp.
- Fans sometimes assume Ben Petry also portrayed Drew Sharp in Season 5 because of the fact they look alike, but he did not.