Patrick Sprigs, or Pat as he likes to be called, known as Tsukasa Futaba (双葉ツカサ, Futaba Tsukasa) in Japan, is a character in the Mega Man Star Force series and one of Geo Stelar's classmates. He has another personality within him called Rey, known as Hikaru (ヒカル) in Japan. After performing a EM Wave Change with Gemini, they are referred to by the name Gemini Spark.