- “I HAVE COME BACK TO LIFE!”
- ―Kahmunrah stating that he has returned to life, used about 3 times before cutting off during the 3rd time.
Kahmunrah is the older brother of Ahkmenrah. He wishes to get his younger brother's magical tablet so that he can open the door to Duat (the Egyptian underworld).
Night at the Museum 2: Battle of the Smithsonian
He rules the Earth and the Smithsonian museum with an iron fist, and then joins forces with other historical leaders such as Napoleon Bonaparte, Ivan the Terrible and Al Capone. Later, modern screen villains, which include Oscar the Grouch (from Sesame Street) and Darth Vader (from the Star Wars films), also want to be on Kahmunrah's team, but Kahmunrah does not let them (Oscar the Grouch is not evil at all and Darth Vader does not speak but tries to use the Force, which naturally does not work and Kahmunrah does not understand the hand motion).
Kahmunrah discovers the combination on the tablet has been changed, and coerces Larry into finding out the new combination by trapping his cowboy friend Jedediah in an hourglass. He later learns the combination after Al interrogates a bobble-headed Einstein and reveals to Kahmunrah that the combination is pi and uses it to open to the gate to Duat, unleashing an army of falcon-headed warriors. These are sent back to the underworld by the Abraham Lincoln Statue. Kahmunrah is later banished to Duat by Larry and he is never seen or heard from again.
Night at the Museum: Kahmunrah Rises Again
He will come back in this movie for revenge.
- In an early version of the script for Battle of the Smithsonian, a conversation between Kahmunrah and Larry reveals that he murdered his younger brother Ahkmenrah. This conversation was scrapped.
- One interesting thing to note is that while the coffins of Ahkmenrah and his parents were found on the Nile Expedition, the coffin of Kahmunrah wasn't present. This would serve to confirm the strained relationship that Kahmunrah had with his parents, as evidenced in the second movie that his parents "may have slightly changed the combination on [it]," since he wasn't buried in the same tomb as the rest of his family. Perhaps, he was never buried at all, and his body was lost in the desert the whole time, which would explain why Ahkmenrah becomes a mummy when the Tablet's power wanes, whereas Kahmunrah becomes a mannequin;Kahmunrah's spirit is still present, but the body which houses his spirit in the 21st Century isn't his own.
- Although not mentioned in the movies, it is highly possible that Kahmunrah wasn't the son of Shepseheret like Ahkmenrah was, but instead from one of King Merenkahre's concubines which would explain why he was so jealous of his younger brother Ahkmenrah, as Ahkmenrah being the son of Shepseheret would make him the heir.
- It is also worth mentioning the fact that Kahmunrah is never even mentioned in Secret of the Tomb despite Ahkmenrah being reunited with his parents.
- There is a small funny gang about Kahmunrah's tunic as Ivan the Terrible, Al Capone, and Napoleon Bonaparte believed it to be some kind of dress.
- Al is confused as to why Kahmunrah would wear something like a dress, but Kahmunrah corrects him.
- Ivan is concerned about if he and his fellow henchmen would have to wear one too.
- Napoleon attempts to ask a question about the tunic, but Kahmunrah asks if there were any questions that does not concern it, which Napoleon lowers his hand.
- In polish version there is a joke when Kahmunrah sitting on the wooly chair says " I Don't know who were you Ferdinand Bad but you had a comfy throne" which is a refrence to the famous Polish comedy series from 1999 Świat według Kiepskich (The World According to the Kiepskis), which main hero oftens sit on the chair drinking beer.