Calvin Whitaker

Calvin is a middle-aged male resident living in Vault 81 as a repairman.

Other interactions
After brief conversation, he will buy any tools from the Sole Survivor for 15 caps a piece. Tools include:
 * Adjustable Wrenches
 * Ball-peen Hammers
 * Combination Wrenches
 * Hammers
 * Screwdrivers
 * Wrenches

Calvin will not buy any other tools from the Sole Survivor, even ones that would seem to make sense, such as the rare Claw Hammer and Masonry Hammer.

Appearances
Calvin appears only in Fallout 4.

Bugs

 * Calvin enters an inaccessible area called Vault 81 Holding Cell shortly after he is spoken to.
 * On PC the only way to speak to him again is to open the command console by pressing the ~ key, type "prid 00153855" without the quotes, press enter, then type "moveto player" again without quotes, press enter, and finally press the ~ key again to close the command console. This teleports Calvin to the player character's location where he can be spoken to. Shortly after speaking to him (in Vault 81 at least) he will return to the holding cell.