Who is Freddie Ketchup?

I've been listening to SGS from the beginning and I could probably count the number of episodes I've missed in that time on one hand. As such, I consider myself highly fluent in SGS-speak. Nevertheless, it seems like a nickname or two fell through the cracks. As a result, whenever these people are subsequently referenced in an episode, I have no idea who they are talking about.

One such player that came up for me from today's episode with "The Boys" was Freddie Ketchup. I've heard that name used numerous times and I still don't know who it is.

I'm hoping this thread can serve as a hub where people can ask for SGS nickname clarifications without fear of judgement :)