Jonathan was one of the members of Rat Patrol Team 01 involved in the events of Liquid Ocelot's Insurrection in 2014. An American soldier of Korean descent, he handles the units heavy weapons. His hair was shaved in such a way, that when viewed from behind it appeared as an exclamation point. Easy going by nature, he could fall asleep anywhere, even in the middle of a battlefield. According to Meryl Silverburgh, he was wary of people sneaking up on him, as she warned Solid Snake not to approach him from behind.