Sanger Zonvolt, The Sword That Smites Evil, is an original character from the Super Robot Wars series.
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Sänger Zonvolt began as a member of the Aggressors unit, an elite group of pilots formed by the Earth Federation Army with other notable members such as Elzam V. Branstein, Gilliam Yeager, and Kai Kitamura. When the unit was disbanded, Sänger was relocated to the North American Langley Base and started to form the ATX Team. When the Divine Crusaders declared war on the Earth Federation, led by such convictions, Sänger chose to leave the ATX Team and join forces with the Divine Crusaders, fighting once more alongside his old friend, Elzam.
As a member of the faction, Sänger upholds the more honorable intentions of Bian Zoldark and seems to understand the point of Bian's rebellion: it is supposed to strengthen the forces of Earth and prepare them for an impending invasion by alien forces. This dedication to valor often causes Sänger to butt heads with another high-ranking soldier, Siebel Mistrel, who feels that the ends justify some truly devious means, such as trying to kill his enemies with poison gas or making the threat of gassing a space colony.
Both Sänger and Elzam join the Earth's forces in time for Operation SRW, the final offensive against the Aerogater invaders before going their separate ways. He and Elzam retreat into hiding, waiting for the opportunity to reveal themselves again when a new alien threat would arrive to terrorize the people of Earth. As expected, in Original Generation 2, both the mighty Inspectors and mysterious Einst appear. Sänger and Elzam, under the disguise of Rätsel Feinschmecker, immediately rush to join their old allies in the battle against the extraterrestrials as well as the Neo Divine Crusaders and Shadow-Mirror. Upon arriving at the Tesla Leicht Institute to free it from Inspector occupation, his Grungust Type-3 is torn apart by the Inspector Vigagi and his Galgau, but shortly after, he acquires Bian's last gift to him: the incredible Dynamic General Guardian, which he shortens to Dygenguard.
After learning the presence of Dr. Sophia Nate, Sänger participates in the assault on the Earth Cradle, which is defended by Shadow-Mirror officer Wodan Ymir, his combat rival. Sänger comes out of the duel as the victor, successfully completing his mission and destroying the core of Magus, freeing Sophia from its possession. After the war against the Shadow-Mirror, Einst and Inspectors is over, Sänger chooses to hide in the shadows once again along with Rätsel, Yuuki Jegnan, and Ricarla Borgnine aboard the Kurogane. In Original Generations, he is joined by the Super Robot Wars Reversal characters Raul Gureden, Raji Montoya, and Mizuho Saiki.
In Super Robot Wars Original Generation: The Animation and later Super Robot Wars Original Generation Gaiden, Sänger appears in his Dygenguard as a reinforcement for the Hagane during their assault on the Hellgate facility. Sänger is also quite active in fighting the Shura army. At one point, the Shura General Magnaz Ald ambushes him and breaks the Dygenguard's Colossal Blade, forcing Sänger to fight with the Dygenguard's original weaponry (which luckily he had personally requested to be re-activated once more), showing that he is not dependent on his Colossal Blade alone. Sänger would have the Colossal Blade repaired after the fight, though.
In 2nd Original Generation, Sanger at first were amongst the people thrown into La Gias, along with Dygenguard. He was found by both Ryuune Zoldark and Hwang Yang Long, and some other pilots, and helped finish the Langran Civil War. Once he returned to the surface, Sanger took up the battle against the Gaia Sabers, Guest, Baral Garden and Ruina. Along this time, Sanger became acquaintated with a girl that was picked up by Ibis Douglas previously, Irui. He also formed rivalry with a servant of Baral Garden, Kukuru
In this time, the Dygenguard became a target of a sentient robot called JinRai, designed to destroy Dynamic General Guardian units. Sanger persevered and eventually went along with the plan concocted by Touma Kanou and Minaki Tomine to capture the main robot and eventually reprogram it.
During the final assault at the Garden of Baral, Sanger saved Kukuru from certain death, after learning how she was duped into the Baral Garden's servitude by Son Ganlong. However, much to his shock, it only delayed the inevitable, after the defeat of Baral Garden and eventually Euzeth Gozzo, Sanger saw Kukuru dying as her life was linked with the Baral Garden, although she died with no regrets. Once all was settled, Sanger once again took residence in the Kurogane, until his services is needed again.