Minecraft players can add new mobs to their world through spawn eggs or console commands, and specific commands can even remove the artificial intelligence of these mobs.

In Bedrock, you can summon it directly by typing slash summon Warden, while on Java, the command to summon it is Minecraft colon Warden.

Giants are somewhat of an easter egg in Minecraft Java Edition but actually do exist in the game files and were added all the way back in 2010.