Hermiod

"Hermiod isn't gonna like that."

- Lindsey Novak

Hermiod was an Asgard advisor assigned to the Daedalus to oversee the various technological advances the Asgard provided for it.

2005
During the Battle of Atlantis, Hermiod was forced to use Asgard transporters to beam nuclear warheads aboard the attacking Wraith Hive Ships, which he did with reluctance since using the technology in such a manner was strongly disapproved of by the Asgard.

On the Daedalus' second trip to Atlantis, he discovered the Wraith computer virus and worked with Dr. Rodney McKay to eradicate it. He also saved the life of McKay and Lt. Colonel John Sheppard by raising the hanger shield when the virus opened the hanger doors.

When The Trust planted a bomb in Atlantis and the Daedalus received a message from Stargate Command, he modified the hyperdrive in order to get in range to transmit the message in time. Later, he used the Asgard transporter to remove the Goa'uld from Colonel Steven Caldwell.

2006
When the Stargate on Taranis was destroyed by the Volcano, Dr. Elizabeth Weir diverted the Daedalus on it's way back from Earth. He determined the amount of time remaining until the eruption.

When Michael Kenmore returned to Atlantis with his Hive Ship to form an alliance with the Atlantis expedition, he worked with Dr. Rodney McKay to find a way around the Jamming code.

When Dr. Rodney McKay and Jeannie Miller were working on the Matter bridge project, they consulted him on the code. Later, he beamed Rod into the containment field to send him to his reality.

Fate
Being in the Pegasus Galaxy it is unknown whether he was among the rest of the Asgard when they committed mass suicide, though it seems likely, given that he hasn't been seen since.

He is last mentioned when McKay finds a way to increase the Daedalus' shield power, he requests Dr. Weir to let Hermiod know about it and give him a call if he needed any help understanding the base code.

Personality
He tended to mutter to himself in Asgard whenever the Tau'ri did something to frustrate him; however his relationship with the Daedalus crew and the Atlantis expedition had improved with time. Hermiod also claimed to be very hard to impress.

Behind the scenes

 * Hermiod's mumbling in Asgard are sentences in English played backwards.
 * Deleted scenes in Be All My Sins Remember'd show Colonels Carter and Caldwell discussing the fate of Hermiod.