Captain America
A variant of Palythoa (Palythoa grandis)

Representative Palythoaphoto — a dedicated image of this exact morph isn't available yet.
A large grandis-type paly named for its red-and-blue comic-book coloration, with a red-orange center ringed in bold blue and a vivid green skirt on big button polyps.
📜 Backstory
Sold by Tidal Gardens, World Wide Corals (as 'WWC Captain America Palythoas') and Vivid Aquariums, and featured on Reef2Reef, the Captain America Palythoa is one of the most recognizable patterned grandis-type palys in the trade. It is a vendor/aquaculture line rather than tied to a single named person, so its original origin is best described as debated.
Keeper tips for this variant
Acclimate slowly to light; it handles a wide range but colors up best under moderate lighting with slow-to-moderate current.