Konqi and Xenia for sure.
Linux Furs
A place for all Furries who use (or are interested in) Linux-based OS's to come, hang out, ask questions, and enjoy!
Kiki, Konqi and Tux
Kiki is Krita's mascot, Konqi is KDE's, the last one (Linux) is also in my favorite list because penguin
Konqi and Xenia, same as everyone else said, but the LLVM dragon also looks rad asf
Maybe not a furry, but the kinda official godot mascot. Godette, is pretty cute imo
I've always loved Konqi and the other kde dragons. I think the deigns are really cute. I also the like sudo sandwich because of how wacky it is.
I like the Lutris otter's design a lot. Not sure if Mullvad counts as traditional open source but its little mole is cute too.
This may sound silly, but do you have any idea if Magic the Gathering's elemental otter is inspired by Lutris? It seems like too convenient of a name.
Not official, but who cares, Xenia is the best!