Blix is Eustace's German, balding assistant, who always kept him company. He wears a black suit and has light gray hair. Whenever Eustace is upset, Blix crouches, and Eustace kicks him simultaneously. Blix appears in "Billion Dollar Boy," "King of Mars," and "My Big Fat Spy Wedding." In the Billion Dollar Boy at the end, Eustace's father ordered Blix to punish Eustace, then Blix makes a mischievous smile and continues on his given order.