[GBA][200X] 2D platform Mecha Fighter

Platform(s): GBA Genre: 2D platformer/ mech combat fighter. Estimated year of release: 200X? Graphics/art style: Anime-style. 2D. Notable characters: Male protagonist. Female sidekick? Notable gameplay mechanics: L/R arms, chasis, head, legs customizable. Player interacted with overworld map selecting area of next combat. Combat took place as a duo of you and your sidekick vs another duo. Each part component had a "health bar" as indicated by a small green circle which would become yellow and then red as it sustained damage. There was also a medallion or something similar that could gain levels and had special effects that could be activated during combat. Other details: Game came in two flavors ala pokemon ruby/sapphire.