Pen and ink, bristol board.
Sushi, the engineer of the ISS Ursula. A character that considerably predated the Kaylee character from Firefly, they shared many traits - being engineering geniuses, sweet dispositions and a fear of guns. However, the differences ere many....
Sushi was a literal genius, expert at jump technologies and most ship systems, being a former child prodigy. Encountered by the crew at the ripe age of 23, she was also nuts - due to having witnessed a jumpspace incursion during a jump, which consumed a hefty chunk of the ship she was on at the time. Since then she routinely watches jump space (shes already crazy, so whatever other effects it has don't seem apparent) and this is largely evidenced by her belief in " Jumpin Buddies". When asked, she explained these were the souls of all the poor spacers lost in jump space" and as such she often bolts viewscreens to portholes facing outward, so "the buddies can catch up on all the good shows."
Crazy, but sweet.