Magmortar first appeared in Challenge From A Rival when it attacked Hiori and his Lucario with Flamethrower. Lucario used Quick Attack on Magmortar but Lucario was burned by its Flame Body. Magmortar then used Flamethrower again and collided with Lucario's Pulse Bomb. After the two attacks collided, it used Fire Punch but Lucario dodged the attack by using Detect. Magmortar quickly used Flamethrower, damaging Lucario, and used Smokescreen. Lucario used its aura to detect Magmortar and Magmortar was knocked out by Lucario's Facade.