[Librarian]

IIRC, Zi-Oh at one time was at least considered to be a female rider, but then various amount of debate points bounced around trying to figure out if it was time for that yet. So this one may be male. Granted, we're also assuming only one person will wear it. Which may not be the case either.

Could though. Especially if they don't overtly tweak the armor to seem like it. So the toys can be either or. One of the perks to full body suit/masks and armored characters is it can be anyone under the mask unless it's obvious in sculpt/design.

So like form fitting tights that show musculature like Spider-man typically reveal gender based on that. But Rider armor so long as it's not designed with a boob plate, can still market toys to boys and girls without an issue no matter who is under it. The watch band though on the chest is typically male. Granted it's becoming a more modern trend of both styles of watch bands are used for either or, it used to be the thicker watch bands were male watches while thinner bands were female watches.

Zi-Oh can go either way, but I don't think the magenta is a sign of anything at all other than a color that made the design standout. Japan isn't as archaic in color choices as other areas. And even over in Sentai, there's been a streak of Blue female rangers like a conscious effort to get rid of color use stereotypes.

Fingernails wouldn't be a way to reveal it either. Phillip painted his(fang joker), Hibiki had sharp ones, and so have other riders. So finger nails aren't really a "female reveal" kind of thing at all when it comes to designs.