Hey, guys. Leon, here.
This isn't a new character, as such, but as of Day 245, the Doc is going to go through some changes.
Early in
Voyager's trip, the Doctor suffered from a critical cascade memory failure, causing him to lose most of his functions. The ship comes with it's own troubleshooter, the
Jupiter Station Diagnostic Program Alpha-11, which comes with it's own version of Dr. Lewis Zimmerman.
In order to save the EMH's matrix, and prevent from doing a complete reboot of his program, the A-11's matrix, which was identical to the EMH's, was grafted onto the Doc's in order to extend his memory capacity and to stop him decompiling himself.
"Okay, cool story, bro, but what does this all mean?"On day 245, a bolt of lightning is going to strike the Doc's Mobile Emitter. Whilst these bolts are normally reserved for canon updates, I've got permission to allow it to mess with the Doc's program. He will turn into the A-11 for an indetermined period of time, as the bolt brought the program's subroutines to the surface.
His canon point will be the end of VOY 03x04 - "The Swarm."
Replies will come from the journal
a_11. More information on the A-11 is found
here on his Memory Alpha page, as well as information on Dr. Zimmerman
here.
Plotting and stuff comes below, if you want!