The Yo-kai Medallium bio reads; "This eerie suit of armor wanders the museum every night. Or at least that's what a little mouse wants you to think."
Phantasmurai appears as a large pale blue ghostly entity clad in red samurai armor with gilded accents, which consists of shoulder armour (sode), sleeve guards (kote), a cuirass with a cross-shaped crack on the center, and tassets (kusazuri). He wears a red oni mask with pale blue eyes and black sclera, a golden headpiece with a flowing white wigholds, and wields a katana in one hand.
Inside the cuirass is his true identity: a small mouse with cornflower blue fur, white paws, and a yellow moon marking on its head. It wears a pale orange vest.
Abilities and Powers
Attacking the mark on Phantasmurai's armor will cause it to eventually break, revealing the mouse Yo-kai causing it to move, and target the mouse as soon as the armor breaks to deal huge damage. Alternatively, you can attack its katana to break it, greatly lowering its strength. Note that when the mouse fixes the armor, the broken katana will also disappear and Phantasmurai will gain another one. Phantasmurai can either use a basic slash attack or a wind elemental slash that hits all three front Yo-kai and also uses an Inspirit that stops a Yo-kai from fighting. His Soultimate Move, Cursed Slash, is actually a powerful move where he swings his swords around and slashes the front party.
"Phantasmurai" is a portmanteau of phantasm and samurai.