James is much like his uncle, Ron Weasley, for his poor timing and knack for interfering with other people's love lives. He also seems to have inherited his sense of humor and love for mischief from his two uncles, Fred and George Weasley, and having a fondness for teasing his siblings and making mischief.
He is also very much like his two namesakes, James Potter I and Sirius Black, in his mischievous and trouble-making nature.