Aliasing delta141 → jack_harper
Link to alias

Reason:

delta141 DeviantArt (DA) now forwards to http://j-harper.deviantart.com/?rnrd=122503 which says "Formerly Delta141".

"Jack Harper" written on art at
http://j-harper.deviantart.com/art/HOMEWORLD-Gregor-Kaufmann-651097268
( short cut http://fav.me/darn9v8 )
That art's DA page says "Homeworld (c) [DA username j-harper] and DA username the-maddog]".

"Jack Harper" is also written on various other pieces of art including
http://j-harper.deviantart.com/art/HOMEWORLD-Harley-646927958
( http://fav.me/dap5wt2 )

"Jack Harper" written on most of the other

EDIT: Forgot to mention, artist's username at Fur Affinity is still delta141 ... which probably won't change until FA allows people to change their username.