Decked out in a black suit blazer, black track pants and sneakers, the 31-year-old crooner performed a medley of his hits, starting off with "Treasure" off his 2012 album Unorthodox Jukebox and "That's What I Like," off his most recent album24K Magic.
Every new song and high note made the audience lose their minds, and as the camera panned around the captivated audience, it was clear why Mars was chosen to close the show, and why he deserved the night's special honor.
After the performance, Mars accepted the Innovator Award and the first people he made sure to thank were his crew of backup singers and dancers, who have been with him for years.
"We've come a long way," he said, after asking them to join him at the front of the stage. "We used to play bars, 200-seater rooms, and now you've seen these guys in the videos, you've seen 'em at the Super Bowl. This is my family right here."
"These are the guys that make me wanna be better and be great," he continued. "Fellas, I love y'all and I couldn't have done it without you. Thank you guys."
After thanking the record labels, his producers and the iHeartRadio awards, Mars got around to sharing his appreciation for the people who matter the most to him -- his adoring public.
"I want to thank the fans in the building at the fans at home. I love you guys," he shared. "I do this all for you guys. You make me wanna be a better songwriter, a better performer and a better entertainer."
"Innovator is a very heavy word, and I'm so honored [for this award]," he added. "It's a little ironic for me, because I genuinely feel like I'm just getting started, so buckle up. I don't know where we're going yet, but we're going, so keep up."
Recently, Mars slayed on stage during a performance at the GRAMMY Awards, where he paid tribute to Prince with an amazing rendition of the legend's 1984 single, "Let's Go Crazy," while decked out just like the late star. Check out the video below.