Here are a few ways to paraphrase or replace “Bob,” depending on your context:
As a casual name:
– Rob
– Joe
– Dan
– Mike
If used as a placeholder for a person:
– Someone
– A guy
– This dude
– That person
If it’s a character in a story or post:
– The investor
– The trader
– The man behind the move
– Mr. HODL
Let me know the context, and I can give a more tailored version!