Josmar Madureira (a.k.a Katkiller) is a Brazilian based art toy designer. He usually tries his hand making collectible plush toys inspired in pop icons (music, fashion, movies, etc.).
The Katkiller toys are approximately 21" tall, made of cloth (raw cotton, polyester, etc.), stuffed with synthetic anti-allergic fiber and the facial features are painted with Silkscreen ink. And if you can't guess who the above and below characters are...you need to be schooled in pop culture.