KO
KO (originally known as Super Strike) is a status effect in Mario & Luigi: Bowser's Inside Story and its remake that can only be obtained by Mario and Luigi via a badge effect that involves mixing the Powerful Badge with any of Luigi's badges. When in this state, the damage dealt by either Bro is multiplied to a certain amount (depending on the other badge in use) only on their next respective attacks. The status is indicated by stars moving upward, and Mario and Luigi may also strike a battle pose just before using a Special Attack. Only the first hit of either bros. next attack gets boosted.
In Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey, the status is now indicated by fire surrounding the powered-up brother, but otherwise functions the same.
| Status effects | |
|---|---|
| Positive | Ally Buff • Charged • DEF-Up • Dodgy • Electrified • Exhaust • Fast • Fury • Gradual FP • HP-Auto Gain • Huge • Invisible • KO • Light G • POW-Up • Payback • Red Essence • SPD-Up • STACHE-Up • Unmotivated |
| Neutral | Allergic |
| Negative | Anger • Blind • Blinded • Blue • Bounce • Burn • Clipped • Confused • Creased • Crumpled • DEF-Down • Dizzy • Fear • Flipped • Frozen • Glohm • Gust • Heavy G • Honey • Injured • Ink • Lifesteal • Mushroom • Mute • POW-Down • Paralyzed • Poison • Prohibited Command • Push • Rhythm • SPD-Down • Scarecrow • Self-conscious • Shock • Sick • Sleep • Slow • Soggy • Splash • Stapled • Stone • Stopped • Tacked • Taped • Tiny • Trip |
| Other | Danger • Downed • Peril |