Sansic and Tailsyrus are best friends that have known eachother since the term "ever" was invented. Sansic: He was created when somebody on DeviantArt shipped Sans and Sonic. He loves going fast, and administering fast times (bad times that are very fast). He has Sonic's speed and Sans' powers. Tailsyrus: He was created when somebody on DeviantArt shipped Tails and Papyrus. He would never kill, even if he was in a life-threatening situation. Partly because of this, he is constantly being killed, much to Sansic's chagrin. He has Tails' flight capabilities and Papyrus' powers.
c2a including a Papyrus picture that I used as a reference to make Tailsyrus' head