▁role ▁in ▁the ▁series ▁as ▁" some where ▁between ▁Professor ▁X ▁and ▁D umbled ore ". ▁The ▁character ▁was ▁first ▁introduced ▁on ▁The ▁V amp ire ▁Di aries . ▁ ▁Chris ▁Lee ▁as ▁K ale b ▁( season ▁ 2 ; ▁rec urr ing ▁seasons ▁ 1 – 2 ): ▁A ▁v amp ire ▁student ▁who ▁is ▁revealed ▁to ▁be ▁drink ing ▁the ▁blood ▁of ▁humans , ▁a ▁practice ▁that ▁is ▁b anned ▁at ▁the ▁school . ▁ ▁Rec urr ing ▁▁ ▁Dem et ri us ▁Br id ges ▁as ▁Dor ian ▁Williams : ▁The ▁li br arian ▁at ▁the ▁Salv atore ▁School . ▁The ▁character ▁was ▁first ▁introduced ▁on ▁The ▁V amp ire ▁Di aries . ▁ ▁L ulu ▁Ant ar ik sa ▁as ▁Pen el ope ▁Park ▁( season ▁ 1 ): ▁A ▁w itch ▁and ▁Jos ie ' s ▁ex - g irl friend . ▁She ▁des pis es ▁L iz zie . ▁Pen el ope ▁leaves ▁the ▁Salv atore ▁School ▁in ▁" Let ' s ▁Just ▁Fin ish ▁the ▁Dance ". ▁ ▁Kar en ▁David ▁as ▁Emma ▁Tig : ▁A ▁w itch ▁and ▁the ▁school ' s ▁guidance ▁coun sel or . ▁She ▁takes ▁an ▁in defin ite ▁leave - of - abs ence ▁from ▁the ▁Salv atore ▁School ▁in ▁" I ' ll ▁Tell ▁You ▁a ▁Story ". ▁She ▁later ▁returns ▁in ▁" This ▁Is ▁Why ▁We ▁Don ' t ▁En tr ust ▁Pl ans ▁to ▁Mu ppet ▁Bab ies ". ▁ ▁Ben ▁Le vin ▁as ▁Jed :