RPG Safezone Guard

If you have seen an anime called Log Horizon, there are these guards that would spawn when a player attacks an NPC or another player in a Safezone or a Town, then they would arrest the player, take their items, and etc. I want it to be like Iron Golems (invincible) spawning to the player PvPing and arresting them, then despawns.

Things I want configurable:
- Which world will have it enabled/disabled
- WorldGuard Region support (If a region is not listed, then a Guard will not spawn at the region if players pvp)
- Permissions (Bypass perm and config reload perm)
- Essentials Jail support (will send player to jail)
- Item-Clear enable/disable (If I want it to clear the items of a player when arrested)
- Return-Item enable/disable (If I want to have items returned to a player)
- Blacklist Return-Item (Which item types will not return to a player. Basically, contrabands)