I-No is a recurring playable character since Guilty Gear XX.
Arguably one of the hardest characters to use, I-No's gameplay is more advanced, focusing on placing relentless pressure on the opponent while retaining defense. I-No's attacks have a good offensive potential and appear almost instantly. I-No's moveset has rather unique properties; when I-No dashes, unlike other characters, she floats above the ground, as if she was jumping. Thus, she can use her aerial moves without actually being in the air. Sultry Performance is an aerial move that can attack horizontally or diagonally, and can be combined with I-No's hover dash, becoming one of the most damaging aerial moves if charged fully. All of I-No's Overdrives have a very limited range; unless the opponent is at melee distance, the chances of missing are high. Ultimate Fortissimo is hard to pull off; that, combined with the fact that it is an aerial move makes it very likely to miss. However, it is I-No's most damaging attack, and makes an excellent finisher with a zero cast delay.
In EX Mode, her unique hover dash has become a command dash, making it harder for the player to access her aerial combos. But she gains the advantage of being able to disrupt opponent's aerial moves with moves like Chemical Love Height.
In Gold Mode, she becomes roughly three times as fast, making her even harder to control due to how increased her mobility is. She also possesses regenerating health as well as infinite Tension. This is the form she takes when fought as the game's final boss. As a boss, she also has an exclusive Overdrive called Megalomania where she becomes fully invincible as the background turns pitch-black, and warning signs appear as she sprouts wings with loudspeakers on them. The formation of the warning symbols differ, but after about 3 seconds of inactivity provided she doesn't False Roman Cancel to change the trajectory suddenly, I-no will fire a stream of unblockable heart orbs that can deal up to 70% of a character's health, as well as a considerable amount of chip damage if the opponent does not use Faultless Defense. This Overdrive actually utilizes I-no's Burst Gauge, rather than her Tension Gauge, as evidenced by the fact that as of SLASH, it is usable in her EX mode.