The family of the Dayton, Ohio shooter has apologized for releasing an "insensitive" death that does not mention the "terrible tragedy".
Connor Betts, 24, was a "funny, kind and intelligent man," the tribute said.
The killing of his sister and eight others in a shooting on August 4 was not acknowledged.
Conner & Koch, a funeral home in Bellbrooke, Ohio, published the obituary on its website on Tuesday.
But after details of the memory were reported by US media, it was deleted a day later.
Instead, an apology from gunman's parents, Stephen and Moira Betts, has been posted.
The couple admits that they were "insensitive not to acknowledge the terrible tragedy he created".
"In their grief, they presented the son that they knew which by no means diminishes the horror of his last act. We are deeply saddened," the brief statement states.
A separate death for their 22-year-old daughter, Megan Betts, which was also published on the site, did not mention shooting.
Brian Koch, the owner of the funeral home which published the obituary, confirmed the Betts family who wrote the tributes.
"Our policy is that we serve grieving families and fulfill their wishes," Koch told NBC News.
How was photography developed?
During the early hours of August 4, Betts opened fire on spectators in Oregon, a lively nightlife district in Dayton downtown, police say.
Armed with a .223-caliber high-capacity magazine assault rifle, the gunman fired 41
Officers in the area managed to fatally shoot Betts before he could enter the lively arena.
Police said "it would have been catastrophic damage and loss of life" had he entered the club .
Detectives investigating the attack say Betts was fascinated by mass shootings, but has not yet identified a motive.
What did the obituary say?
"A funny, kind and intelligent man with striking blue eyes and a friendly smile, Connor Stephen Betts, age 24, of Bellbrook, was killed Sunday, August 4, 2019," the obituary said.
Betts was an avid reader, liked to swim, was a Boy Scout, was in his high school marching band, played Xbox games and loved watching Fox's animated show "Bob's Burgers", according to the post, according to US media reports.
"Connor will be dearly missed by his friends, family, and especially his good dog Teddy," the tribute read.
His sister's scarecrow demon mentions her ambition to work for Nasa "to be a part of exploring the vitality of other planets".
Megan, who was expected to graduate from Wright State University in December with a degree in earth sciences, had a love for "geology, earth, and space," the obituary said.