For anyone who may care, according to the manga on the official TakaraTOMY page for Legacy Dia Burnout, she's a non-living artificially intelligent mecha operated by a human pilot (Dia). As this is a comic book, I don't know if the voice is male or female (which tends to be how other scifi robots have "genders," like the droids in Star Wars). The Japanese language doesn't rely too heavily on pronouns, and during Cosmos' dialogue (as the race announcer), he doesn't use any pronouns.
https://tf.takaratomy.co.jp/products...tf_tl/tl-ex-02
But yeah, I guess this means that Legacy Burn Out is officially genderless. Unless Hasbro's bio has gendered pronouns?