User blog comment:DoomFest/~~The Great Thumbnail Contest ~~/@comment-25421952-20150919203019/@comment-26254805-20150920165230

Geno is a toy.

He was played with by a Toad, like a toy, alongside other toys. And then a Star Spirit named ♥♪!? took control of him.

So:

♥♪!? - Star Spirit

Geno - Toy.

So techincially yes. Also, on the Mario Wikia, Geno is in the Toys category.