|Doom Dome Battle|
|Demon Bounty||Mission Alpha|
|Destroy All Humans!|
Xar is a playable character in Doom Dome Battle and its sequel.
Xar is a less than regular soldier in the invading army on Earth. Unlike the real soldiers, Xar doesn't have any special powers and thus is looked down upon. Neither does he have a proper speech pattern. He sneaked on the invading fleet because he really wanted to be part of the assault on Earth. He looks up to Lieutenant Vexok, even having a child-like crush on her. He tries to prove himself to the world and wants to breed with a strong being to get a child who will get strong. He eventually decides to live on Earth as a regular resident in Kitty's home, only learning later that his betrayal will cost him his head.
Because Xar doesn't have any special abilities he uses extraterrestrial technology, which includes his main weapon, his lasergun. The gun can shoot different kind of lasers with different effects and range. He has a high defense but low strength due to his bubbly body. One of his attacks even include throwing his hat.
His Doom Attack is Destroy All Humans! in which he sets his lasergun to a killing button and charges up a huge super beam which he fires at the opponent. If it KO's them only a pile of dust remains.
Doom Dome Battle
Xar sneaked on board of the mothership that was headed for Earth in secret after being rejected for the army due to not having a special power. Once they arrived he left the ship and looked for someone to breed with so he could have a bright future for his child. He finds Jamila in a restaurant attacked by demons and kills all of them. Afterwards Xar wants to breed with Jamila, which she doesn't want, but he keeps pressuring and they engage in battle as a result. Xar is pushed back by Jamila who flees the scene.
Xar continues his search and suddenly sees lieutenant Vexok fall out of the ship and passed out on the ground and wants to offer his help. Vexok didn't recognize him and Xar blurts out that he sneaked on the ship. Vexok allows him to travel along but warns him that she will not protect him or anything. The two continue their travels and encounter Prince Bucksalot and Rokukai. They get into a fight and battle each other. They defeated Vexok and Xar and Prince even claimed that Xar was stronger than Vexok, making her worry about how weak she is.
They finds tracks of where Almighty might be and follow it, and find Almighty chained up to Mama Kitty's leash. They battle her and afterwards Almighty says he has become attached to the human and wants to make her his queen. In the meantime Xar sneaks off and finds his way to the suburbs where Mama Kitty used to live and makes it his residence.
Doom Dome Battle 2
With Xar on Earth, the extraterrestrials return to Earth. Exa, an executioner is deployed on Earth to hunt Xar down and execute him.
In this alternate future, Xar didn't make Mama Kitty's home his own and instead was captured by Justin Bailey at some point in time. This was after he discovered his true power of KO'ing people with only one punch. He was chained up in Justin Bailey's spaceship. Alpha entered the ship and met with him and says that he has been trapped there for a long time. When Alpha defeated Justin, she frees Xar who thanks her and says he will be cleaning the place up from chemical waste. He asks Alpha to return his hat that he lost in the Asian District and in return he gives his lasergun to Alpha.
- Based on the standard aliens depicted in movies.
- His comedic personality is based on the aliens that appear in South Park.
- His playstyle is inspired by the video game Destroy All Humans!.
- His alternate costume is based on Saitama from the manga, One Punch Man.
- The costume's name makes a reference for a superhero name Saitama had in mind for himself.
- In Mission Alpha he discovered his special ability, which was to KO people in one punch, another reference to the manga.