The following is a list of apperances by all the major recurring characters of Star Trek: Enterprise.
Kiaphet Amman'sor
Kiaphet Amman'sor was not played by a performer, but rendered as a special effect.
- "The Xindi" (ENT Season 3)
- "Rajiin"
- "Proving Ground"
- "Damage"
- "The Council"
- "Countdown"
==Chang== (Daniel Dae Kim)
- "The Xindi" (ENT Season 3)
- "Extinction"
- "Hatchery"
==Elizabeth Cutler== (Kellie Waymire)
==Daniels== (Matt Winston)
- "Cold Front" (Season One)
- "Shockwave, Part I"
- "Shockwave, Part II" (Season Two)
- "Carpenter Street" (Season Three)
- "Zero Hour"
- "Storm Front" (Season Four)
- "Storm Front, Part II"
==Degra== (Randy Oglesby)
- "The Xindi" (Season Three)
- "Rajiin"
- "The Shipment"
- "Proving Ground"
- "Stratagem"
- "Azati Prime"
- "Damage"
- "The Forgotten"
- "E²"
- "The Council"
==Dolim== (Scott MacDonald)
- "The Xindi" (Season Three)
- "Rajiin"
- "Proving Ground"
- "Azati Prime"
- "Damage"
- "The Council"
- "Countdown"
- "Zero Hour"
==Maxwell Forrest== (Vaughn Armstrong)
- "Broken Bow" (Season One)
- "Fortunate Son"
- "Shadows of P'Jem"
- "Fusion"
- "Fallen Hero"
- "Shockwave, Part I"
- "Shockwave, Part II" (Season Two)
- "A Night in Sickbay"
- "Cease Fire"
- "Future Tense"
- "Regeneration"
- "First Flight"
- "The Expanse"
- "Home" (Season Four)
- "The Forge"
==Future Guy== (James Horan)
- "Broken Bow" (Season One)
- "Cold Front"
- "Shockwave, Part I"
- "Shockwave, Part II" (Season Two)
- "The Expanse"
==Hawkins== (Sean McGowan)
- "Anomaly" (Season Three)
- "Impulse"
- "Hatchery"
- "The Council"
==J. Hayes== (Steven Culp)
- "The Xindi" (Season Three)
- "The Shipment"
- "Harbinger"
- "Hatchery"
- "Countdown"
==Erika Hernandez== (Ada Maris)
- "Home" (Season Four)
- "Affliction"
- "Divergence"
==Jannar== (Rick Worthy)
- "The Xindi" (Season Three)
- "Rajiin"
- "Proving Ground"
- "Azati Prime"
- "Damage"
- "The Forgotten"
- "E²"
- "The Council"
- "Countdown"
- "Zero Hour"
Kelly
(Kevin Darr)
- "North Star" (Season Three)
- "Hatchery"
- "Damage"
- "Countdown"
- "Zero Hour"
- "Storm Front, Part II" (Season Four)
- "Borderland"
==Koss== (Michael Reilly Burke)
==S. Money== (Dorenda Moore)
- "The Xindi" (Season Three)
- "Rajiin"
- "North Star"
- "Chosen Realm"
- "Harbinger"
- "Hatchery"
- "Damage"
- "Countdown"
- "Zero Hour"
Richards
==Romero== (Marco Sanchez)
==Michael Rostov== (Joseph Will)
- "Vox Sola" (Season One)
- "Two Days and Two Nights"
- "The Crossing" (Season Two)
Ryan
- "The Xindi" (Season Three)
- "Anomaly"
- "Twilight"
- "Chosen Realm"
==Thy'lek Shran== (Jeffrey Combs)
- "The Andorian Incident" (Season One)
- "Shadows of P'Jem"
- "Cease Fire" (Season Two)
- "Proving Ground" (Season Three)
- "Zero Hour"
- "Kir'Shara" (Season Four)
- "Babel One"
- "United"
- "The Aenar"
- "These Are the Voyages..."
==Silik== (John Fleck)
- "Broken Bow" (Season One)
- "Cold Front"
- "Shockwave, Part I"
- "Shockwave, Part II" (Season Two)
- "The Expanse"
- "Storm Front" (Season Four)
- "Storm Front, Part II"
==Arik Soong== (Brent Spiner)
- "Borderland" (Season Four)
- "Cold Station 12"
- "The Augments"
==Soval== (Gary Graham)
- "Broken Bow" (Season One)
- "Shadows of P'Jem"
- "Shockwave, Part II"
- "Cease Fire" (Season Two)
- "The Expanse"
- "Twilight" (Season Three)
- "Home" (Season Four)
- "The Forge"
- "Awakening"
- "Kir'Shara"
- "Terra Prime"
==Sphere Builders== (Josette DiCarlo)
- "Damage" (Season Three)
- "The Council"
- "Countdown"
- "Zero Hour"
- "The Council" (Season Three)
- "Countdown"
- "Zero Hour"
- "The Council" (Season Three)
- "Countdown"
- "Zero Hour"
==Thalen== (Josh Drennen)
- "Proving Ground" (Season Three)
- "Stratagem"
==Williams== (Jim Fitzpatrick)
- "Broken Bow" (Season One)
- "Shockwave, Part II" (Season Two)
- "Future Tense"
- "Regeneration"
- "Home" (Season Four)
Woods
- "Anomaly" (Season Three)
- "Twilight"
- "North Star"
- "Chosen Realm"
- "Stratagem"
- "The Forgotten"
- "Countdown"
- "Zero Hour"
Xindi-Insectoid councilor
The Xindi-Insectoid councilor was not played by a performer, but rendered as a special effect. Tarik Ergin acted as a stand-in for the animators.
- "The Xindi" (Season Three)
- "Rajiin"
- "Proving Ground"
- "The Council"
- "Countdown"
==Xindi-Primate councilor== (Tucker Smallwood)
- "The Xindi"
- "Rajiin"
- "Proving Ground"
- "Azati Prime"
- "Damage"
- "E²"
- "The Council"
- "Countdown"
- "Zero Hour"