Genma Onslaught was Teppen's fifteenth expansion.
''Genma Onslaught" contains examples of:
- Evil Costume Switch: The "Sengoku Machine Armor" EX Skin for Oichi swaps out her traditional pink and black armor for a skimpy black one piece leotard.
- Set a Mook to Kill a Mook: The Genma army is finally stopped in part thanks to the rampage of monsters that normally hurts Kamura Village, though this time they were intentionally led there by Master Utsushi.
