Emmet
Emmet was the Emergency Tactical Hologram used during the late 24th century by  Cristóbal Rios aboard La Sirena. He was one of several emergency holograms (the others being Emil, Enoch, Ian, and Mister Hospitality), and was programmed to look like a tattooed, messy-haired version of Rios that primarily spoke Spanish. ()

In 2399, Emmet was activated by Rios to take over phasers while La Sirena was under attack by Kar Kantar's Bird-of-Prey. ()

Later, while La Sirena was en route to Deep Space 12, he conveyed to Raffi Musiker that Alonzo Vandermeer (Rios' former captain in Starfleet) had committed suicide. ()

After Rios transferred ownership of La Sirena to Seven of Nine, she merged all the emergency holograms so that only Emmet remained. By disabling the hologram safety protocols, he could assist her in combat during her Fenris Ranger missions. However, she was unable to disable the theraputic plug-ins left from the merging, much to her annoyance. ()

Appendices

Appearances
 (Season One)

 (Season Two)

Background information 
Emmet was played by Santiago Cabrera.
Holograms