None of the Bailiffs and Court Clerks have been named characters. Here are all the actors who have had credited appearances as bailiffs and clerks, along with the episodes in which they appeared:

Bailiffs:
Stephen Browder - 3x11
Joe Conti - 2x25
Marcus Folmar - 3x09
Kurt Scholler - 2x14, 2x23, 3x04
Mark Edward Smith - 2x10, 2x26

Clerks:
Jeff Bowser - 2x13
Zylan Brooks - 1x11, 2x03, 2x10, 2x19, 2x23, 2x24
Heidi Heller Banks - 1x08, 3x15
Laura Henry - 1x07, 2x07, 2x19, 3x08
Takayo Fischer - 1x14, 2x12, 2x22, 3x02, 3x14
John Papapavlos - 3x01