Samus Aran is a solid middle tier character in Super Smash Bros. Melee. She often sees success in the hands of Duck at the highest levels. However, her grab leaves a lot to be desired. Despite its longer range than most, its recovery if you miss is painfully slow, making it easy to punish.
However, if you were able to extend the range further, it becomes less likely to miss… and that’s exactly what you can do with this glitch. If you push down while hitting Z for the grab, you will extend your throw range slightly with Samus. However, if you lose a stock, the glitch resets and you have to repeat it.
Source: F0REVER UNREAL GAMING