'Glee' co-star Kevin McHale, comedian Margaret Cho, transgender actress Candis Cayne and Kiss frontman Gene Simmons have joined the NOH8 Campaign, which raises awareness and funds for gay rights causes, including ending California's 2008 voter-approved gay marriage ban, Proposition 8.

The NOH8 Campaign, which is helmed by photographer-activist Adam Bouska and his partner Jeff Parshley, photographs celebrities and everyday folks with their mouths duct taped and the campaign's familiar “NOH8” slogan often written on one cheek.

In his photo, Simmons is wearing sunglasses and pointing with one hand while signing “I love you” with the other.

Forty-two-year-old comedian Cho, who plays paralegal assistant Teri Lee on cabler Lifetime's Drop Dead Diva, displays several of her brightly colored flower tattoos as she poses for the campaign.

Cayne, who is best known for playing transgender mistress Carmelita on the ABC drama Dirty Sexy Money, and McHale, who plays the role of Artie Abrams on the Fox music-comedy Glee, are photographed wearing white v-neck t-shirts.

Simmons and Cho have previously worked with the organization.