Simplify the following text for a Grade 9 native English-speaking person.
Original: As with the Doctor , the role has been portrayed by several actors , since the Master is a Time Lord as well and able to regenerate ; the first of these actors was Roger Delgado , who continued in the role until his death in 1973 .
Simplified: As with the Doctor , the role has been portrayed by several actors , the first being Roger Delgado who continued in the role until his death in 1973 .