So apparently this goofball is still at it. I was spiritbonding and saw his character walk up to me using Stealth, then proceeded to spam crying and cheering emotes, followed by dancing. This was right after they were seen by a FC member doing emote spams near them in another map, so this tells me that it is a deliberate action to be following not only me, but probably everyone in my FC now too.

Since blacklisted people can still see what you say, but you can't see their texts, I'll probably start making shouts/yells towards them, calling them an annoyance or something. Maybe a link to them on another gaming board, showing them flipping out on people (found out a lot more than I wanted by searching the character name). I'd think the embarrassment would be enough to drive most anyone away, but at the same time I bet they would love the attention.