Tamara Chen is apparently the only friend of Knives Chau. They're the same age (17, 18 during the 6th book). Very much like Wallace to Scott (excluding the being the gay roommate part), she acts as Knives' voice of reason and, like her friend, she hearts The Clash at Demonhead. She first appeared in Book 1 to accompany Knives to the Sex Bob-omb gig at the Rockit. She appears in Book 2 to help Knives dye her hair and process the news that Scott has a new "fat-ass hipster chick" girlfriend, Ramona Flowers. In Book 4 she comforts Knives after her (second) breakup with Young Neil.