Derek was the cousin of Noam Plinsky, the future cousin-in-law of Thera Kerplopolis, the future step cousin-in-law of Lester Awesome, Holley Holtey, & Tyler Awesome, the nephew of Mr. and Mrs. Plinsky, the future nephew-in-law of Angelina & Mr. Kerplopolis, the future step nephew-in-law of Max & Mrs. Awesome, and the grandson of Nana and Pops Plinsky. He is younger than him and appears only in Brat Busters.