The character Nitro Convoy (called Override in the English version) was originally envisioned as a female, and showcases several corresponding characteristics, however in the finished series, "she" was given a male voice. The English dub turned the character into a female again.
The series was originally meant to act as a sequel to Transformers Energon (2004), but during production, was rewritten to be a completely unrelated story. Later on, the American edit of the series reinstalled its sequel status, although this had caused several continuity errors. After many years, Takara (the owner of the Transformers brand in Japan) followed suit and now they also consider the series to be a sequel to Super Link, disregarding the continuity issues.
Chromia (the female Decepticon called Thunderblast in the dub) has large breasts and nipples under her chest-armor that can briefly be seen in one or two shots.
Although in most of the series, the Transformers' facial expressions are limited to opening and closing their mouth and at times smirking, in episode 44 (titled "Taiketsu! Lori tai Chromia" or "Showdown! Lori VS Chromia" in English), they are given much more expressive faces, and even have teeth.