Bowser (SSB4)/Dash attack
Bowser leaps forward and performs a side kick. It has decent range, deals above average damage for a dash attack (at 12% when clean) and has very high base knockback, even more so than most other dash attacks. However, its knockback scaling is very low by contrast, such that it renders the move unable to KO under 200% with no DI or rage, although it can KO at around 130% with maximum rage. It also has somewhat slow startup, coming out on frame 11, coupled with high ending lag, making it unable to combo reliably despite its vertical launch angle, and even easier to punish on shield than the average dash attack. Due to these exploitable flaws, the move sees rare practical use overall, usually only as an emergency KO move when Bowser has maximum rage, as in any other case, Bowser's grabs, aerial attacks and even Flying Slam are more reliable approach options that can also rack up more damage and yield KOs earlier.
Bowser's dash attack was buffed in 1.1.4, dealing 2% more damage both when clean and late, which by extension drastically increased its knockback. However, as mentioned above, it still fails to KO middleweights effectively under 200% without rage, thus making the increase significant only at high rage levels.