"Remembering Chris Browne, the cartoonist behind 'Hägar the Horrible' " (article) "Hägar the Horrible: A family story" (article)
RIP. Hagar the Horrible is a classic strip. I read strips like Hagar, The Born Loser and Gus Arriola's Gordo (probably the best strip ever, at least art-wise) thanks to my mom, who loved them. She had a boxed set of Hagar paperbacks that I reread many times.
Sad news. All Dik Browne's kids seemed to have taken some role in what became a family profession. I did still read Hagar where I didn't some others when they went on without the original artist. It was still good and some others weren't so much. I would generally say not to go on without the original artist but there have been exceptions, many over a long period. The ones not continuable seem exemplified by Peanuts, and going way back, Skippy and Krazy Kat... just impossible to follow their original creators probably.