Stan Lee used a mobility scooter to travel down the red carpet at Monday night’s Avengers: Infinity War premiere in Los Angeles amid a series of ongoing controversies.

The Marvel legend, 95, revealed he’s batting pneumonia in late February to TMZ, explaining he had to cancel several appearances because of his illness. Shortly before, Lee appeared at the Black Panther premiere in a wheelchair.

Speaking to Disney on the Infinity War red carpet, Lee gave a shout out to his fans, thanking them “for having spent all these years coming to see my cameos [in the Marvel films].”

Los Angeles Global Premiere for Marvel Studios' "Avengers: Infinity War"
Stan Lee
| Credit: Charley Gallay/Getty Images

On the day of the premiere, news broke of a lawsuit in which the father of Marvel Comics’ is being accused of sexual misconduct by a massage therapist who says the comic book icon acted inappropriately with her during two separate sessions. A rep for Lee did not return PEOPLE’s request for comment.

Meanwhile, controversy has recently swirled around Lee, who sued a former business manager alleging fraud and has spoken out defending his daughter after others around him claimed she was trying to gain control of his assets.

'Avengers: Infinity War' film premiere, Arrivals, Los Angeles, USA - 23 Apr 2018
Stan Lee
| Credit: Michael Buckner/Variety/REX/Shutterstock

Lee lost his longtime wife Joan, who died at the age of 93 last July. “She was the girl I had been drawing all my life,” Lee once recalled of his late wife.

Avengers: Infinity War opens Friday.