Slash made a guest appearance performing alongside Lenny Kravitz at the 'Power of Love Gala' -- a tribute to legendary boxing champion Muhammad Ali held Feb. 18 at the MGM Grand Garden Arena in Las Vegas.

Slash was recently lampooned in an episode of 'South Park' as a fictional character who is portrayed by several different people, much like a mall Santa Claus. Though Slash is indeed a real person, the gag poked fun at the fact that sometimes it seems like Slash is everywhere.

The former Guns N' Roses axeman's most recent appearance was at a ceremony to honor boxing legend Muhammad Ali. "Muhammad Ali is and always has been a role model & a hero to me," said Slash. "It's a huge privilege to be able to perform in his honor. He is one of the great icons of American culture and history." Slash took the stage with Lenny Kravitz to pay tribute to Ali with a performance of  'Always on the Run' -- a track the pair wrote together for Kravitz' 1991 album 'Mama Said.'

The 'Power of Love Gala' celbrated the 70th birthday of Muhammad Ali with all proceeds from the event being donated to the Cleveland Clinic Lou Ruvo Center for Brain Health and the Muhammad Ali Center in Louisville, Kentucky. Others in attendance at the event included Chris Cornell, Stevie Wonder, Sean Combs, Snoop Dogg, former President Bill Clinton, Sir Anthony Hopkins, Oprah Winfrey, fellow boxing legend Sugar Ray Leonard, and more.

Another high-profile appearance Slash is expected to make will be at Guns N' Roses Rock and Roll Hall of Fame induction ceremony April 14. Despite current GN'R keyboardist Dizzy Reed's recent claim that the band's original lineup will be in attendance, Slash isn't so sure. "I know that there's a lot of rumor about it, as always when it comes to GN'R, out there on the Internet and stuff," said Slash in an interview with the radio station DC101. "But as it stands right this second, I have no idea what's going on."

Slash's new album featuring Myles Kennedy and The Conspirators is titled 'Apocalyptic Love' is set for release May 22 and is the follow-up to his critically acclaimed solo debut 'Slash.'

Slash and Lenny Kravitz Perform 'Always on the Run'