Android Kikaider 01: It's kind of wild how much Mari (Bijinder) is just the best character in the show by the mid 30's despite her design when transformed being Like That and all the weird occasional baggage around being the Girl Robot the writers have. She's just got the most character stuff going on, especially compared to Ichiro (01)'s complete lack of it. Her deal with being an ex-deathbot who switched sides and got partial independence from Shadow with Ichiro's incredibly bad copy of a Conscience Circuit and now mostly just has crippling depression about her own self-worth is just really good?
Plus her actress is really good at the untransformed fight scenes. Which thank God she gets better treatment there than, say, Tackle from KR Stronger.
