Jesse

Jesse is a human in the Generation 1 continuity.

Jesse (also 'Jessie') is Buster Witwicky's girlfriend. She likes to apologize.

Marvel Comics continuity
Jessie and Buster were making out in his car (while their friend "O" watched) when it was rear-ended by Bumblebee. During the following Decepticon attack, Buster told Jessie and "O" to find help, while he drove away in the Bug. The next time Jessie saw Buster, he was caught up in the Autobot/Decepticon war, and she was starstruck by his bravery yet terrified for his safety.

Find Your Fate Junior
Jesse and Buster were exploring (READ: snogging) in the hills outside of Center City, when they discovered a hidden Decepticon base and overheard Megatron's dastardly earthquake-related plans.

They ran into Beachcomber who was also investigating the Decepticon base. However, Jesse was abducted by Ramjet and the two had to leave without her.

Jesse was subsequently brainwashed by Megatron into betraying the Autobot rescue force, resulting in Center City's destruction, and Decepticon dominion over the planet Earth. Maybe Buster's next date will go better.