The new forums happened! They had custom avatars on the old forums and those were not linked up as options when the new software rolled out in 2018. I THINK they can now get their avatars back though. Vrak has his now but that was sort of recent and I think is manually done.
Example thread showing Vrak has his old avatar back.
Congrats! Also glad to see you back on the forums even if it is for just today. I was lucky enough to meet you a few times at Blizzcon and you are just as kind in person 
~Mira/MissCheetah