Riggs is the initially-suicidal, often-reckless, always-resourceful crazy-eyed partner of Murtaugh, who is frankly too old for his sh…enanigans.
Despite Murtaugh’s stuffy early reservations, the pair soon become very close, with the Murtaugh family semi-adopting Riggs as one of their own. As a partnership, Riggs does most of the legwork, while Murtaugh still does most of the worrying.
In Lethal Weapon 2, Riggs finds Murtaugh sitting on a bomb-rigged toilet seat. With Riggs refusing to leave his side as the bomb squad arrive, the pair manage to escape certain death by leaping into the bathtub as the bomb explodes.