Complex sentence: Sanders, a friend of Hammer's, also appeared in his "Too Legit to Quit" music video, and his alter-ego "Prime Time" showed up in Hammer's "Pumps and a Bump" video.
Split into simpler sentences: Sanders, a friend of Hammer's, appeared in his "Too Legit to Quit" music video. His alter-ego "Prime Time" is also used in Hammer's "Pumps and a Bump" video.