Mascot of Linux is penguin, mascot of BSD is Devil (or Beastie).
The mascot of isn't (the/a) devil, but a daemon: In greek mythology, daemons were beings between gods and humans, e.g. think of hermes the gods' messenger. This has nothing to do with what the (christian?) church connects to "the devil", even if there's some visual equivalence. A detail of difference to note are that the BSD daemon does not have a horned foot as one would expect from "the devil".
- Hubert