Tough, friendly, and no-nonsense, he's not actively sinister, but he'll follow orders without thinking about it too much. He is not an introspective sort of guy. He loves being a cop and doesn't worry about whether what he's doing is right; he is the law.
During the Lone Wanderer's tenth birthday party on July 13, 2268, Officer Kendall can be overheard talking with the Overseer in the stairway to the Upper Level. Officer Kendall is assigned by the Overseer to give the party just a few more minutes and then make sure everyone gets back to work.
Escape!: You encounter Kendall just outside your room, where he is being attacked by several radroaches. You can wait and hope the radroaches kill him, attempt to save him from the radroaches, or kill him yourself. He is the first person that can be killed in the game. He will become hostile after the radroaches are dead. There is no peaceful resolution to escape him without console commands.
Trouble on the Homefront: Officer Kendall will be present if he didn't die during Escape!. When interacted with, he blames the Lone Wanderer and James for the Vault's problems.