Add Ninjas to Mountain/Extreme Hills biome

It would be neat to see Ninjas added to the Mountain / Extreme Hills biomes. The ninjas' temple sits at the top of a mountain. Ninjas are not hostile unless attacked. They are tamable by giving them 10 iron ingots on the ground. They will then pick them up and give you a non-craftable throwing star. The throwing star acts as if it has loyalty, it degrades with use, and cannot be repaired, unless it is enchanted with mending. Ninjas can be encountered during the day or night cycle, however they are more prevalent during the night. They have the special ability of jumping six blocks high. A tamed ninja will act in your defense if you are attacked while you are within a 16 block radius of the ninja. Once tamed, a ninja cannot be killed. Ninja’s do not leave the mountain biome, and will teleport back to their temple if they are taken too far from their temple or outside of the mountain biome. Adding ninjas to Minecraft was my 7 year old son’s idea.