Thread:Thunder the Coyote/@comment-5688420-20200510074657/@comment-5688420-20200516072530

About that.

For its first few years, there was some dispute as to which company rightfully owned Kessenju: ACS owned the card game and the video game license, but Kodansha owned the rights for publishing the manga, which ran on their Comic BomBom magazine.

As a result, from 2001 to 2007, Kessenju was treated as a licensed IP by ACS, and thus, Sendo and friends disndi get to appear in any ACS crossovers at the times.

This ended in December 2007, when Kodansha discontinued Comic BomBom, leading to ACS buying out full control of the IP from Kodansha. A month later, Kessenju REVOLUTION, the then-ongoing series resumed on Kadokawa Shoten's Kerokero Ace, where it would stay until 2013.

Eventually, Sendo Tenryu from the original series appeared in 2009's ACS Superstars Clash RX as a playable, and much later in 2017's Cross Chaos as an assist.