the same time as the other first generation Chosen Digiom, Gennai's group made the crests, tags, and digivices but their base was attacked by the Dark Masters, Piedmon killed the other "whatever Gennai is" and took the tags and crests but Gennai grabbed the DigiEggs of the partners and escaped however he dropped Gatomon's egg and she had to grow up alone, always waiting for someone until she decide to search for this person, that's when she met Myotismon and the rest is Digital History.