Rubinyan is a pure ruby Yo-kai with big black eyes. It's muzzle and paw tips are solid white, while it's inner-ear and nose are gold. Around it's belly is a pure gold band to match it's collar, which has a pink sphere hanging from it. The flames of it's tails are bright yellow.
Being traded:"I see you have a burning heart! That's one thing we have in common, nya!"
Receiving food (favourite):"Nyumm..."
Receiving food (normal):"Nyot bad..."
Receiving food (disliked):"Nyone of that!"
Freed from the Crank-a-kai: "Nyice! I'm out—and thanks to you! Ready for some fun?"
Post battle (was not befriended):
Post battle (was befriended):
In the anime
Rubinyan, along with the other Jewelnyans including Sapphinyan, Emenyan, Topanyan first appear in EP161, where Nate has trouble trying to summon Jibanyan after Yo-kai Misterr Typoo erases the name on the Yo-kai Medals shortened to "Nyan". He eventually summons all of the cat Yo-kai that Nate had befriended, but they all turn their backs onto Nate.
Rubinyan is a portmanteau of Ruby and Nyan, onomatopoeia for the sound a cat makes.