; ▁seasons ▁ 4 – 5 ) ▁ ▁Also ▁st arring ▁Arnold ▁Pin no ck ▁as ▁George ▁Ry der ▁( se asons ▁ 1 – 3 ) ▁T ara ▁Sp encer - N air n ▁as ▁Nur se ▁Sand y ▁( se asons ▁ 2 – 4 ) ▁Rach el ▁Sk ar sten ▁as ▁E ly se ▁( se asons ▁ 2 – 3 ) ▁In grid ▁K av ela ars ▁as ▁Nich ola ▁Mart ell ▁( se asons ▁ 4 – 5 ) ▁Natal ie ▁Kr ill ▁as ▁Alex ▁K end rick ▁( season ▁ 5 ) ▁ ▁Rec urr ing ▁Col m ▁Fe ore ▁as ▁Ray ▁Mer cer ▁( season ▁ 1 ) ▁L ara ▁Jean ▁Chor ost e cki ▁as ▁T oby ' s ▁mother / My a ▁( season ▁ 1 ) ▁John ▁F lem ing ▁as ▁Young ▁T oby ▁( season ▁ 1 ) ▁ ▁C ros so ver ▁appearance ▁In ▁episode ▁ 8 ▁of ▁the ▁third ▁season , ▁Flash point ▁character ▁Michael ang elo ▁" S pi ke " ▁Sc ar l atti ▁crossed ▁over ▁in ▁a ▁brief ▁scene ▁in ▁which ▁he ▁was ▁leaving ▁the ▁hospital ▁after ▁getting ▁medical ▁attention ▁and ▁interact ed ▁with ▁Os man ▁" O z " ▁Bey ▁who ▁had ▁just ▁brought ▁a ▁patient ▁to ▁the ▁hospital . ▁ ▁Production ▁ ▁The ▁series ▁is ▁produced ▁by ▁Sh aft es bury ▁Films , ▁in ▁conj unction ▁with ▁C TV ▁( se asons ▁ 1 - 4 ), ▁Space ▁( se asons ▁ 1 - 2