This small addon pack changes the appearance of player to any vanilla mobs, or in other words morph to any mobs. Though there are only a couple of mobs that are included in this version so stay tuned for more!
Here is the video: As you can see in the video, it works on servers because it is only a resource pack. Just activate it on Global Resources. Included mobs: (Mobs are added in alphabetical order): Armor Stand Bat Bee Blaze Cat Cave Spider Chicken Cow Creeper Drowned Elder Guardian
How to use:
Just choose your desired mob in the options menu
Note: Equipped items are invisible in third person view