Strongholds are one of the coolest overworld structures, but it feels like a poor lead-up to the End and the dragon boss fight when you have to confront a bunch of pesky little silverfish. The whole structure and portal needs a mob that is daunting enough to fit the role as an obstacle or guard to the player's objective along with the silverfish.
• The Sentry: a humanoid, player-sized, statue/golem mob with skin that resembles stone brick. Wields an iron sword and a gray shield, and has no facial features except for one eye of ender in its head.
- Behavior: when not attacking the player, sentries will spawn standing still in the corners and walls of the stronghold like statues, never wandering. When the player has hit one sentry, sentries in other rooms within a radius will move out of their motionless positions and advance on the player. Unlike zombies and other common monsters, sentries are able to switch between attacking and blocking with their swords and shields. Weakness: the mob's hitbox would actually be located on its head, where the eye of ender is.
- Drops: when killed a sentry can potentially drop its eye and sometimes its sword and/or shield. The supply of eyes of ender this mob provides could help for players who may make the mistake of not having enough eyes ready to activate the portal before entry to the stronghold.