R. Ryan
Corporal R. Ryan was a member of the MACO force assigned to  during its Delphic Expanse mission and afterwards. He was a sniper.

Service record 
In September of 2153, Ryan accompanied Lieutenant Malcolm Reed and Major Hayes on a mission to the trellium mining planet to rescue Captain Jonathan Archer, Commander Tucker, and Kessick. Following a directive from Hayes, Ryan sniped the foreman of the planet's north mine, using the targeting scope on his particle rifle. ()

Later that month, he assisted in an unsuccessful effort to stop a group of Osaarians from boarding and looting Enterprise. He threw a stun grenade when discovering the pirates inside armory but the Osaarians beamed aboard. ()

Ryan was part of S. Money's MACO team which took position near one of the airlocks when a Xindi-Reptilian warship docked and a Xindi-Reptilian boarding party blew off the hatch. Ryan and the other MACO opened fire but had to withdraw. When Money was hit by an energy discharge, Ryan helped her get around the next corner. ()

In an alternate timeline, Ryan, along with W. Woods and B. Moreno, fended off a Xindi-Reptilian boarding party, killing one of the invaders during the battle. ()

In November 2153, Ryan was confined to some quarters by a group of Triannon who took over Enterprise. Later, he assisted Captain Archer retake the ship and fired at some Triannon in engineering. ()

Ryan and Corporal Chang guarded the entrance to a crash landed Xindi-Insectoid starship on which Captain Archer tried to hatch the vessel's youth. Both MACOs denied T'Pol access to the Xindi-Insectoid hatching chamber. ()

Ryan was also among numerous crew members who, in Enterprises launch bay, listened to Captain Archer deliver a speech in remembrance of all the crew members who had lost their life in the Delphic Expanse. ()

In 2154, when Enterprise was confronted with a "future version" of itself, Ryan guarded discussions between Captain Archer, Lorian, and Karyn Archer in the ship's conference room. ()

On February 13, 2154, Lieutenant Malcolm Reed asked the MACOs for volunteers to join the mission to board the Xindi weapon. All the MACOs volunteered, including Ryan. Though Reed chose Romero, M. Forbes, and W. Woods for this assignment, Ryan later defended Enterprise from a boarding group of Sphere-Builders. ()

Corporal Ryan was one of several MACOs who welcomed Arik Soong aboard Enterprise and escorted him to the vessel's brig. ()

The same year, Ryan and W. Woods arrested Lieutenant Malcolm Reed because of treason. They brought him into the ship's brig while Enterprises crew also had to deal with Klingon Augments. ()

Corporal Ryan and Private Woods accompanied Captain Archer and Lieutenant Reed on board Harrad-Sar's barge, where Harrad-Sar offered them drinks and food. Like every other male present, Ryan was hypnotized by the performance of three Orion slave girls – D'Nesh, Maras, and Navaar. ()

Appendices

Appearances 
"Affliction"

Background information 
Ryan was played by regular background actor Jason Collins in almost all of his appearances, except his last three, where he was played by background actor Aaron White.

This character's first initial, "R," can be read off his name tag in episodes such as  and .

Ryan was initially absent from the final draft script of "The Xindi", as his act of sniping the foreman on the trellium mining planet was originally written, as of , for Major Hayes to do. As of 10 September of that year, however, the character in this scene was simply referred to as "a sharpshooter", in the episode's final draft script.

A costume with the name tag E. Hamboyan, which was sold off on the It's A Wrap! sale and auction on eBay, included a belt with the name tag "Jason", indicating use by Jason Collins.

Apocrypha 
Taking its cue from an early draft of the script for "The Xindi", that episode's novelization (included in the book , together with the novelization of ) does not feature Ryan either, with Hayes instead assuming his act of shooting the foreman.

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Humans
Enterprise (NX-01) personnel
MACO personnel