An elderly townsman of Beta III and devout member of the Body, who denounces the Enterprise landing party to the Lawgivers for failing to join the Festival.
Hacom is an old man living in the town visited by Kirk's landing party in the first-season Original Series episode The Return of the Archons. He was played by Morgan Farley.
He is at Reger's house when the strangers arrive seeking rooms just before the Red Hour. Hacom is suspicious that these young visitors are not taking part in the Festival, from which only the old are excused, and is scandalised when another elder, Tamar, speaks lightly of Landru's will.
The next morning he returns with two hooded Lawgivers, who kill Tamar on the spot and order the visitors to be absorbed. Kirk's flat refusal leaves the Lawgivers confused, and the party escapes with Reger. Hacom represents the willing obedience that Landru's rule has bred.