Toru Owashi
When El Dorado Wrestling was created in 2006, Senga was brought in by his Toryumon comrades and formed an alliance with Toru Owashi. In 2007, Owashi, founded a stable called Animal Planets, which had an animal theme. Thus, Senga adopted the name of Hercules Oosenga, based on the Hercules Ookabuto, and started to wear beetle-like horns during his entrance. He feuded with Milanito Collection a.t. and defeated him in a backup dancers deprivation match, which caused a losing streak to Milanito and occasioned the loss of his gimmick, becoming Tsutomu Oosugi.