Chain grab

A chain grab (also chain throw) refers to a series of grabs and throws that the victim cannot escape. Generally, a player throw the opponent a specific direction (most commonly down or up), chases the enemy's directional influence, and grabs the opponent while he/she is still in mid-air and before he/she can tech. Generally, Fast-fallers, Weight heavyweights, and large characters tend to be more vulnerable to chain grabs than floaty characters, lightweights, and smaller characters.

In Super Smash Flash 2
So far in SSF2 there is only a few characters than can do chain grabs.
 * Sora
 * Goku
 * Peach

Links

 * Goku's down throw chain grab