Captain Defenestrator

Corrected entry: When Grant finally reveals who he works for to Bond, he tells him that part of Spectre's plan is to have Grant kill Bond and Tania, making it look like a murder-suicide and use the film as a motive for Bond killing her. Later Grant states that his orders are to kill him but its up to him as to how he does it, and tells Bond he will keep shooting him until he kisses Grant's foot. How would multiple bullet wounds look like a suicide?

Correction: Killing Bond in any way possible is the priority objective of Grant's mission. The murder-suicide is just a best case scenario.

Captain Defenestrator