Not sure if it's been pointed out but Chev's sig says: "Lampyris noctiluca" which is, according to google, the common glow worm of Europe
Desmond's profile says "Staff Litter Clue Hunters -- Group 371 is not a clue."
Transparent in Pi.'s sig is "aye aye"
Zeena's sig says "Sit back and relax" in transparent