 Recurring characters who appear in " Vitamin D " are glee club members Santana Lopez ( <unk> Rivera ) , Brittany Pierce ( Heather Morris ) , Mike Chang ( Harry Shum , Jr . ) and Matt Rutherford ( <unk> <unk> ) , former glee club director Sandy <unk> ( Stephen <unk> ) , Principal Figgins ( Theba ) , football coach Ken Tanaka ( Gallagher ) , Terri 's co @-@ worker Howard <unk> ( Kent <unk> ) , and local news anchors Rod <unk> ( Bill A. Jones ) and Andrea Carmichael ( <unk> Davis ) . Joe <unk> guest stars as Joe . 
