Marc Sutton, 34, was shot by a hunter on Saturday near the Les Gets Alpine ski resort as he was cycling through woods.
Earlier this week his mother Katrina called him a “monster” and declared on Facebook: “I hope you rot in hell Mark Thomas Sutton.”
However his father, John Sutton, has said he is “devastated” that she would “try to blacken his name”.
“I’m devastated they would try to blacken his name now that he’s dead, it’s hard enough to come to terms with how died,” he said.
Mr Sutton’s partner of nine years, Jo Watts, also hit back after a woman claimed she had been raped and beaten by Sutton around 100 times.
She said: “I’m shattered by his death, his life taken so violently by a hunter while he innocently rode his bike on a popular track.
“Now, to add to all that, I’m devastated people have chosen to make these allegations - nothing to do with how he died - when Marc is not here to defend himself.”
She added: “His friends know the real Marc. The Marc I knew and loved was a kind, happy, loving man who would do anything for anyone.”
Sutton, who moved to France from originally from Caerphilly in south Wales six years ago, ran the Wild Beets Kitchen restaurant in Les Gets, a Haute-Savoie ski resort.
The Sun reported that Sutton fled abroad when confronted by his mother and alleged victim.
His mother told The Sun: “When I heard he had been killed I felt utter relief, it was a massive burden off my back. I was just relieved he couldn’t hurt us or anyone again.
“‘He deserved to be shot like an animal - he was the biggest animal there was.”
A former girlfriend said she had “cried with relief” at this death.
He was also said to have served six months in prison for assaulting another girlfriend, shattering her cheekbone and damaging her eye socket.
The 22-year-old hunter was taken to hospital suffering from shock and is being investigated on suspicion of aggravated manslaughter.
