The character that used to be in
InfoMagic's "
Linux Developer Resource" CD-ROM cover. Actual name unknown.
ELFOS was just a gray ball with eyes and mouth, two feet with Mickey Mouse style shoes, a roman-style helmet with a red star and text "ELFOS", a rod with a sparkling star (InfoMagic's logo) and shield.
In earliest LDRs where it appeared it (he?) just looked forward alertly; In one 1996 release, he looked angry and sticked out the tongue (InfoMagic also made T-shirts that had this picture of ELFOS and the text "Linux: Operating System with an Attitude" on the back) and since then, the character appeared in wide variety of poses and situations, always kind of funny.
My sister once made a drawing in which ELFOS and Pacman meet, both look at each other very puzzledly.