Along the times of the Commedia dell'Arte evolution, the main characters would define themselves and also adapt to changes in the public tastes: nothing new, it sells.
We could try to define what was the typical Commedia dell'Arte setup as follows:
Various mask names would, from time to time, from audience to audience, take the lead in these roles, growing in fame or losing impact on the public.
Commedia dell'Arte = Comedy of Life?