The performer, whose real name was Shannon Spruill, was popular in the late '90s and early 2000s.
The actor had spent his last years as an inventor.
The "Harry Potter" star was married to fellow actor Damian Lewis, who tweeted that McCrory "died as she lived. Fearlessly."
The cast, including Amber Riley, Jane Lynch, Heather Morris and Darren Criss, will reunite at the GLAAD Media Awards to pay tribute to Rivera, who died in July.
He played the villain Ba'al in the long-running space exploration drama.
"I will never understand why/how this tragedy could’ve happened," she wrote in the emotional tribute, alongside a letter from one of Gigi's best friends.
The "Black Panther" actor is "trying to find the light in the midst of it."
"You gave me the one true light in my life," the "Hot in Cleveland" star wrote of their son after the rock legend died at age 65.
Known offstage as Zavion Davenport, DeVayne was remembered by peers as "a caring, empathetic and beautiful soul."
The "Dick Van Dyke Show" creator and "Oh, God!" director had a show business career that lasted decades.