Weight

Weight determines how much horizontal knockback a character is knocked back by, if damage is constant. Weight also determines vertical knockback, as well as falling speed. Weight classes are only truly present in Super Smash Flash 2; though some characters jump and fall at different heights in the original Super Smash Flash, the fact that all can be KO'ed at the minimum of 100% of damage with an up attack while remaining airborn completely nullifies actual weight classes.

Types of weight classes

 * Lightweights: Characters who fit into this category are knocked back father than middleweights and heavyweights and are relatively easy to KO than most characters. Notable examples include Kirby, Meta Knight, and Pikachu.


 * Middle-Lightweights: Characters who fit into this category are not as easy to KO as much as pure lightweights, but are easier to KO than middleweights. Notable examples include Marth, Naruto, and Lloyd.


 * Middleweights: Characters who fit into this category are moderately knocked back by attacks, with their weight playing little or no effect in how far they are knocked away. They are neither easy or hard to KO usually. Characters who fit into this category are Sonic, Ness and Bomberman.


 * Middle-Heavyweights: Characters who fit into this category are characters who are harder to KO than middleweights, but are easier to KO than pure heavyweights. Notable examples include Link, Goku, and Captain Falcon.


 * Heavyweights: Characters who fit into this category are knocked back shorter by attacks then other characters who are middleweights or lightweights. They are relatively hard to KO most of the time in comparison to other weight classes. Examples of characters that are heavyweights are Wario, Yoshi, and Samus.

In Super Smash Flash 2
The ones with a star are values confirmed by a dev of SSF2. The tilde means that value might be an underestimate, maybe 1 point could be added.


 * 1) 114*
 * 2) 111*
 * 3) 110~
 * 4) 110~
 * 5) 107~
 * 6) 105~
 * 7) 105~
 * 8) 105~
 * 9) 102
 * 10) 100~
 * 11) 100~
 * 97
 * 95
 * 1) 94~
 * 92
 * 90
 * 90
 * 90
 * 90
 * 87
 * 85
 * 84
 * 1) 83~
 * 2) 83~
 * 80
 * 79
 * 77
 * 77
 * 1) 73*

Trivia

 * Zero Suit Samus was a medium-light character in the main Super Smash Bros. games, but is a heavy character in SSF2.