User blog comment:Twozenos124/Penguin Walking Across My Screen?!?!/@comment-24801399-20150119220709

Yes, indeed a joke by the admins. After noting the similarity between the names Kallus and Kallie (an admin here), a user made up "Kallus Jo"

I later got another admin to make that image, which has clothes Kallie the admin wears.

He put it in a javascript code on this wiki, to make it "float" across the screen every hour.