Character homocide is regrettable but a fact of life.

Forever gone are Wallace and Gromet due to a tragic fire.
Elmer Fudd at NASCAR stood in the road and yelled "Let the waith begin" and was run over by 42 cars. A look alike is now doing Geico commercials.
Charlie the Tuna, Boris Badenov, Natasha, all have come to a tragic end.
There are too many deceased characters to list now, but if there is any chance for Chongo to pull through I hope he regains his former glory.

Probably the most complex imaginary characters are personnae, especailly your own.