Kai considers Blitzwolfer to be her favorite out of all of Ben's aliens.

While still greatly liking Blitzwolfer, she has shown signs of growing feelings for Ben as himself, becoming bashful when people imply they are a couple and giving Ben a kiss on the cheek as he leaves.

Kai has Excalibur in her possession and uses it as her primary weapon. In The End of an Era, Kai helped Humungoopsaur fight Dr.

In Fight at the Museum, Kai found the Orb of Pooma Poonkoo in the Ben 10,000 Tower that she thought was lost forever.

In An American Benwolf in London Kai is shown to be the only one able to move the sword Excalibur from it's stone, having grabbed onto it in order to prevent drowning it moved slightly. In the future it is revealed that she is indeed worthy. Kai Green is the future version of Kai Green.

In Ken 10 it is seen that Kenny's skin color is a mix of white and Native American. According to the pop-up version, Ben would eventually marry Kai in a possible future, and she is Ken's mother.

In Omniverse, it is revealed that she has been taking Judo lessons, showing considerable skill against trained soldiers of the Forever Knights. Kai has considerable tracking skills taught to her by her grandfather. Convincing the Forever Knights to work together, everyone was able to escape alive. As Ben battles the mutated Forever King, the cave's underground pipes were ruptured and caused a flooding. When removing the blade from its stone seemingly proves impossible even with the Hyde Formula or Ben's strongest aliens, Forever King Chadwick orders his men to kill their enemies. Ultimately, they discovered the hidden location of the legendary Excalibur. While capturing Wes, Kai manages to escape and contacts Ben and his partner Rook for help. Jekyll, quickly afterwards ambushed by the Forever Knights in their search for Dr. Working with her grandfather, they find the secret laboratory of Dr. Kai appeared in An American Benwolf in London. She made a cameo appearance in Ben's dream world in Perfect Day. When she admitted to this, Gwen gave her a stern talking to. She was Ben's first crush, but she only took interest in him after he started becoming Blitzwolfer because she wanted to, as quoted, 'train and tame him'. She first appeared doing a spiritual Native American dance in the episode Benwolf.

Kai green ben 10 omniverse