Princess Peach Toadstool (often abbreviated to Princess Peach or just Peach) is the princess of the Mushroom Kingdom that is continuously being kidnapped by Bowser, forcing Mario to set out on a quest to rescue her.
In M.U.G.E.N, Princess Peach has been made multiple times by a variety of creators; these include a normal and a Nega version by Big Eli King both made with sprite edits from Kart Fighter, and one made with custom sprites by EugeneQ which is still in beta as of now.
EugeneQ's Peach has several specials at her disposal including throwing vegetables at her opponents or sending a Bob-omb to follow them. This Peach has some powerful Hypers, such as summoning a Mega Fire Mario. Peach can also send Daisy to hit the opponents with athletic moves such as a homerun. But, she is still a beta and has many glitches, which include Peach getting up after she was KO'd, falling through the ground, and becoming invincible. There are also various oddities with the attacks that make them somewhat unbalanced, and her level 1 hyper doing more damage if blocked and being able to regain enough power for it to be used again if blocked. Her Mega Fire Mario summon also seems to be a hyper which accidentally costs zero power. These make them extremely overpowered provided one knows what they're doing with them.
This version of Peach came straight out of Super Smash Bros. for Nintendo 3DS & Wii U for the competition, with her having a decent combo ability along with having great damage to back it up. She also has unique Specials and a fun play style, her A.I is pretty moderate with it being more of a challenge to beat.