As the most grounded and "sensible" member of the group, Doug's role in the third film mirrors his predicament in the first movie: he is the catalyst for the others' journey but is physically absent from their main adventures. Doug Billings | Hangover Wiki | Fandom
Yes, he's in it, but he spends the movie being kidnapped and waiting to be saved. Poor Doug.
As the most grounded and "sensible" member of the group, Doug's role in the third film mirrors his predicament in the first movie: he is the catalyst for the others' journey but is physically absent from their main adventures. Doug Billings | Hangover Wiki | Fandom
Yes, he's in it, but he spends the movie being kidnapped and waiting to be saved. Poor Doug.