▁Char acters ", ▁where ▁the ▁player ▁ch ases ▁and ▁must ▁catch ▁four ▁others . ▁ ▁Char acters ▁▁ ▁Son ic ▁R ▁features ▁ten ▁play able ▁rac ers , ▁each ▁with ▁unique ▁attributes ▁and ▁ab ilities ▁falling ▁in ▁line ▁with ▁their ▁usual ▁ab ilities . ▁The ▁title ▁character , ▁Son ic ▁the ▁H edge h og , ▁is ▁the ▁fast est ▁and ▁poss esses ▁the ▁ability ▁to ▁" double ▁jump " ▁( be ing ▁able ▁to ▁perform ▁a ▁second ▁jump ▁in ▁mid - air ). ▁T ails ▁is ▁able ▁to ▁fly ▁through ▁the ▁air ▁for ▁a ▁short ▁time , ▁and ▁Kn uck les ▁the ▁E ch id na ▁can ▁gli de ▁through ▁the ▁air ▁upon ▁jump ing . ▁Amy ▁Rose , ▁the ▁last ▁initially ▁available ▁character , ▁drives ▁a ▁car , ▁allowing ▁her ▁to ▁hover ▁over ▁bodies ▁of ▁water ▁and ▁receive ▁extra ▁speed ▁from ▁driving ▁over ▁boost ▁spaces . ▁Secret ▁characters ▁include ▁Son ic ' s ▁ar chen emy ▁Dr . ▁Rob ot nik , ▁who ▁f lies ▁in ▁a ▁hover craft ▁and ▁res ists ▁differences ▁in ▁terrain ; ▁robot ic ▁cl ones ▁of ▁Son ic ▁( Met al ▁Son ic ), ▁T ails ▁( T ails ▁D oll ), ▁and ▁Kn uck les ▁( Met al ▁Kn uck les ); ▁Rob ot nik ' s ▁robot ic ▁assistant ▁E gg Rob o ; ▁and ▁Super ▁Son ic , ▁a ▁faster ▁version ▁of ▁Son ic ▁power ed ▁by ▁the ▁Cha os ▁Emer ald s . ▁ ▁Plot ▁ ▁Son ic ▁and ▁T ails ▁are