http://sturmtruppen.tumblr.com/
https://derpibooru.org/profiles/Raider
He was BIG into foalcon (underage pony porn) with a specific character (Tornado Bolt). And VERY public about it. A good portion of his tumblr activity was writing porn fics with his hyena OC and that filly fucking (not sure if any made it to a proper fic site), often outright rape, and requested porn of that character; that sort of thing. Plus pony porn in general, ofc. Towards the end of the whole DWM thing people started calling him out on it, and only then did he pull a "it's a coping mechanism" card and start deleting old posts.
He later turned the public knowledge into how much he liked foalcon into some sort of post-modernistic shitpost meme by naming his blog "Tornado Bolt Presents Hyenacon 2013" and switching to "haha, all those hundreds of posts I deleted, I was just liking it ironically

D".