Ah this is a fun topic no! I can feel the flames of war already lol. Now all the evidence aside from two things(which I WILL touch on...NO wiki is NOT one of the two) most articles tekken sites and such say "IT'S A GIRL WHISTLENUTS!" yet the fight still rages on. Now before I go into anatomey and all that fun stuff based on her appearence alone lets touch on the two Holy reources that people who say it's a guy like to us. First: Mashima Zaibatsu....it's a fan site,NEXT!Second: the official profile [link] techniclly this is NOT official since you can only get in to the profile with THAT link. If you go to [link] Leo's profile is unclickable meaning you shouldn't be looking at the profile. I think it is the beta profile and is put up for morons who decided to type her name in to see this profile(even though it's basiclly saying NO FAGGOT! NOT READY!!) I think it's put there to troll people and keep the controversey of Leo's gender going(like it was in japan. You know more people taking about it more publicity the game gets) so in summery since it's still unclickable from the main page. It may be trick on the fans(like asuka's relation to jin tekken 5)

Ok now that the elephant is outta the room let's go on. I think leo is a girl based on her anatomy. I will provide several pics of her(and other characters) from THE GAME'S PROMO ART AND SCREENSHOTS AND NO FANART. Let's start with the face. In tekken all male faces can be noted as male at first sight with smaller eyes and more squared chins)[link] even the games two labeled "pretty boys" Jin [link]).jpg [link] and hwoarang [link] [link] . While girls in the game tend to have much rounder wider eyes and have rounded chins and all wear make up(even asuka) [link] [link] [link] [link] Now let's look at a few pics of leo(btw refer back to some of these links if points are brought up and you want to double check the apperences)[link] [link] [link] Out of the previously mentioned recuring trends in the series' designs, Leo sit comfertably in the female group.
Now of course many jap games have had this kinda face for male characters(Hi Bridget!) but not Tekken!(as of yet at least) So let's gone on to body builds. Tekken games seem to have the anatomy for the characters pretty realistic..for the most part. examples: Asuka's toned legs because of using her legs alot and Marduk having a large upper body due to using his arms and biceps but his legs are slightly smaller due to not using them AS often [link] Lili has a slim build due to her style being about graceful moves and out think her foes. Leo appears to have a medium build(like julia in tekken 3 [link] makes sense since leo's style is simalur to her's) If you look you can see leo has slight hips and her chest..umm I'm I'm pretty sure those are not pecks..the shape is all wrong. I am pretty damn sure a shirt that if your shirt is tight pecks do not look like that... Now I'm sure there's one person doing "HEY! Leo is wearing BOY CLOTHS" well..that's ah..kinda sexiest...no? Leo from the looks of things Leo is an androgynous like Naoto Shirogane from Persona 4 [link] and Makoto from street fighter [link] Could I be wrong..YES! I could EASILY be wrong. This is just MY opinion