> Patrick Stewart and Alec Guinness
No, it's Leonard Nimoy. This is a Trek TOS satire, and he's the alien sidekick who hates his catchphrase "Live Long and Prosper" or, in this case, "By Grabthar's Hammer, you shall be avenged".
Nimoy had a reputation for being quite sick of being Spock. It was even the title of his biography: https://en.wikipedia.org/wiki/I_Am_Not_Spock