Complex sentence: The most visible on-air personality at WGGT was "Billy Bobb" (created by comedian Dana Lowell), who hosted "Billy Bobb's Action Theater" and "Billy Bobb's Fun Club" from January 14,1987 to December 18,1991.
Split into simpler sentences: The most visible on-air personality at WGGT was "Billy Bobb", (created by comedian Dana Lowell). He hosted "Billy Bobb's Action Theater" and "Billy Bobb's Fun Club" from January 14,1987 until December 18,1991.