- If ghosts remain in Ninjago for too long without a vessel, they will begin to depart and will then be sent to the Departed Realm.
- The Departed Realm has by far the most deceased souls of any realm.
- It is the only realm in which the Realm Crystal cannot open a portal to.
- Morro is the only villain who allied with the Ninja during the Yin-Yang Eclipse.
- He was also the only one to willingly return to the realm after making his amends.
- It is unknown if this realm will ever be visited. Though technically several characters have made it their place of permanent residence, off-screen.
- It may be impossible for a being's spirit to ever truly die, as even "deceased" beings like cursed ghosts and skeletons go on to the Departed Realm if their bodies are destroyed (cursed ghosts formerly simply returned to the Cursed Realm, until it was destroyed).
- It is unknown what the Grasslands are, since the First Spinjitzu Master appeared with Lloyd.
- It is the only realm that is mostly impossible to access through any normal means.
- The Realm Crystal was unable to open a gateway to it, while a large dose of Traveler's Tea can.