Arkor is an enemy most frequently found in Skytemple.
Alpha Lore (unlocked by killing Alpha variants)
Standard autonomous fixed-position anti-aggression Unit. Thanks in part the Arkor's novel swivel-joint and Endless Cannon, these Units have no room for any sort of targeting hardware. This frees them from the burden of having to aim at would-be victims before opening fire.
Beta Lore (unlocked by killing Beta variants)
You might be asking: "Who would design a modern artillery unit that doesn't know how to find its own targets and can't be moved?"
You'd be asking a fine question. Marketing loves that damn swivel-joint so much they don't bother mentioning the Endless Cannon anymore.
Gamma Lore (unlocked by killing Gamma variants)
I really just built this unit to gloat - to date, no other weapon system known to man creates an endless string of gravity-fearing projectiles, and I always thought that was neat. I pushed them through into the Project claiming they'd be ideal for testing Contractor mobility and defensive systems, but I really just like seeing them shoot.