Student activism played an important, yet understudied, role in Congo's crisis of decolonisation. In both productions she understudied Sandy's role. Tom Carter understudied Patinkin and performed as Che. Harrison understudied the roles of Scaramouche and Meatloaf. She also understudied both Elphaba and Nessarose. Ann Ungar understudied and played for Dorothy Loudon in the role of Miss Hannigan. He trained as a chorister, understudied for Welsh National Opera and performed in choirs. Some of the most understudied species are Sikkimese arthropods, specifically butterflies. She understudied the role on Broadway in 2000. Martell understudied Tammy Blanchard in the 2003 Broadway revival. She also understudied and played the roles of Demeter and Jemima in that same production. She also understudied the principal role of Jean. In "Hairspray" he also understudied the roles of Link Larkin and Corny Collins. He understudied for the character of Riff and had played that role many times. She also understudied the lead role of Elle Woods, but only went on once.