"We must save each other". The model and performer was found dead by Montreal Police at his apartment in Plateau-Mont-Royal.
But Genest was certainly best known for his appearance in Gaga's "Born This Way" video (below), in which his real body art was mirrored via makeup on the singer.
In the video clip, which has been viewed more than 231 million times, Genest posed as the pop star's zombie lover, with Gaga in matching makeup. Genest was well known on social media, where he had hundreds of thousands of followers.
She added, "Science tells us that it takes 21 days to form a habit, if you are suffering from Mental Health issue I beckon for today to be your first day or a continuation of the work you've been doing".More news: Trump to Sessions: end Russian Federation probe 'right now'
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If you're anxious someone you know may be at risk of suicide, you should talk to them, says the Canadian Association for Suicide Prevention.
She followed this by sharing a photo of herself and Rick - and urging fans who might be struggling with their mental health to "reach out".
Genest was found dead at his home in Montreal, Canada in what have been reported as tragic circumstances.
The surgery he went through proved successful although it involved the removal of half his brain.
When Lady Gaga cast the heavily tattooed Genest in her film clip for "Born This Way" in 2011, Genest rose to worldwide stardom, modelling for GQ, Vanity Fair and Vogue Hommes.
In the clip, the artist replicated his face tattoos.