Play with the face dials - good to have Morphs++ on board, if you've bought those.

Use a skin texture from an older character set.

If going strictly by Anime style canon, either have a pudgy round older man look, or a had, square-jawed look.  Older heros can still be massively muscular.  Reduce size of eyes, even in strict Anime canon styling.  Salaryman look usually with spectacles, bland expression, suit and briefcase but that species is vanishing from street life these days.

Eternal Hobbyist