Harold

Harold seems to be the least important servant in the play, but his scene actually does give us two pieces of interesting detail. Here is Harold's one glorious line:

HAROLD. What name, madam?
MRS. CHEVELEY. [To PHIPPS, who advances towards her.] Is Lord Goring not here? I was told he was at home?
PHIPPS. His lordship is engaged at present with Lord Caversham, madam.
[Turns a cold, glassy eye on HAROLD, who at once retires.] (3.86-89)

The two details are these: 1) Mrs. Cheveley avoids giving her name, so she's able to surprise Lord Goring and mess with Sir Robert's head. And 2) Phipps's "cold, glassy stare" – all it takes to make Harold disappear – gives us a little peek into the culture of the servants' world. Just like the upper classes of Victorian society, servants obeyed strict rules about who was the boss of whom.