Shulker: [Wiki Page]

You can just remove the head if you want to use the design as a Shulker Box instead of a regular Shulker. Also, you can cut the pieces that are pointed by red arrows, as they're optional.

You can use the last image to cover the inside of the shell if you don't like keeping it white.

Other search terms: Mini End - Mini Purple - Mini Shell Lurker - Mini Ender Golem - Mini endergolem (actual texture file name)