Unexpected mob spawn in Atlas Park

[RikOz]

Last night, some time after the Everlasting server was taken down and put back up, I encountered these charming fellows in Atlas Park. Previously, I'd never seen these mobs anywhere but in the Rogue Isles. Odd glitch, or on purpose?

[Trickshooter]

Based on the history of their Paragonwiki page, they've been spawning in Atlas Park (and Galaxy City while it was around) since at least mid-2007.

[Crowcus Pocus]

I remember them from live.

[MetaVileTerror]

Yeah, I found a few in the far north-west corner of Atlas Park a few weeks ago.   Or was it south-west?

Still seems awfully odd for them to just be there . . . I feel like we need some lore to explain it.

[RikOz]

It was just really odd seeing them all of a sudden. It was just those two, no others that I could find. I level all of my alts via missions, so I've covered most of the ground in Atlas Park many many times on many alts, and this was the first time I'd seen them.