Sinister Motives, Miles, and Gwen: Are there any suggestions for the easiest method to keep track of each villain’s remaining hit points?

Because the villains in The Sinister Six scenario tend to enter and leave play often, it is suggested that players use either damage tokens or dice to keep track of each villain’s remaining hit points. However, which method the players actually choose is up to them.

– Sinister Motives rulebook