Dirk Strider is the post-scratch incarnation of Dave's Bro. Prior to his proper introduction to the reader, he is referred to by Jane as D. Strider, and later by Roxy as di stri. Dirk's chumhandle is timaeusTestified (TT), in line with the rule that post-scratch kids have the same chumhandle abbreviation as the ectobiological sibling of the kid whose pre-scratch guardian they were. This completes the set of chumhandles when added to GT, GG, and TG. He uses the same color text that Davesprite uses, analogous to the fact that Jane and Jake use the same colors as Nannasprite and Jadesprite, respectively. He also signed the book that he sent to Jane in orange pen.