The Sega Corporation is a Japanese multinational video game software developer and an arcade software and hardware development company headquartered in Japan, with various offices around the world. Sega previously developed and manufactured its own brand of home video game consoles, such as the Sega Mega Drive (known as the Sega Genesis in North America), the Sega Saturn and the Sega Dreamcast, from 1983 to 2001. On January 31, 2001, Sega announced that they ceased production of the Dreamcast, effectively exiting the company from the home console business and market. While arcade development would continue unchanged, the restructure shifted the focus of the company's home video game software development to consoles developed by various third-party manufacturers. Sega developed many Disney video games that were released exclusively on their own consoles throughout the 1990s. Sega's mascot, Sonic the Hedgehog and Dr. Ivo "Eggman" Robotnik the main antagonist of the Sonic the Hedgehog series, made cameo appearances in Wreck-It Ralph in 2012 and its sequel in 2018. Prior to that, reruns of Adventures of Sonic the Hedgehog were shown on Toon Disney from 1998 to 2002, and reruns of Sonic Underground aired on Disney XD in 2012.