If you're looking for manga similar to Bakuto Sengen Daigander, you might like these titles.
Misaki Suzuhara is a young girl who traveled to Tokyo to live with a relative, but ended up becoming involved in the greatest game of all time: Angelic Layer! In this fast-paced competition, players customize dolls and fight them in arenas of all sizes, hoping to gain experience and perhaps win the greatest tournament of them all! With new friends to meet and new enemies to defeat, the best time of Misaki's life seems to be just beginning. Join Misaki as she struggles to be the best, even in the face of overwhelming odds.
Does the savior really exist? If it does exist, it won’t be deity or extraterrestrial... It must be a creature of human beings. 13 years ago, a transit space station, between the earth and the moon, accidentally fell during its way back. The Robo Master, Padma Knight appeared in front of all human beings around the world and saved the space station, amazingly that shocked the world. The new era of robo came.
Medabots follows the adventures of ten-year-old Ikki, who knows everything about Medabots and Robattles but doesn’t have his own Medabot — until Metabee comes along. Ikki must contend not only with Metabee’s sometimes unpredictable behavior but also with two gangs, the Screws, Ikki’s schoolmates, and the criminal Rubberobos, who want Metabee for their own nefarious purposes. Can Metabee help Ikki foil the thieves trying to steal his Rare Medal?