"Bright Eyes" was the name given to a young Tholian that was rescued by the USS Enterprise under Captain James T. Kirk in the 2270s. In 2270, Bright Eyes became Starfleet's first Tholian cadet. (TOS - Year Five - Experienced in Loss comic: "Issue 22")
Following an attack on Lloyd Zeta-9, "Bright Eyes" was found under debris by several members of an away team under Captain Kirk from the Federation starship USS Enterprise. They were beamed aboard the Enterprise. They were tended to by Dr. Leonard McCoy and Nurse Christine Chapel in the transporter room. After leaving Lloyd Zeta-9 aboard the Enterprise after a confrontation with a Tholian ship, Captain Kirk attempted to speak with Bright Eyes to no avail. They were taken to Engineering where Chapel, Commander Montgomery Scott, and Ensign Satie created a force-field to help Bright Eyes breath aboard the ship. However, Satie was distrustful of them due to his sister's death aboard the USS Defiant and blamed him for a explosion in engineering.
Bright Eyes was protected from Satie by Commander Scott and Lieutenant Nyota Uhura until Ensign Pavel Chekov subdued Satie. After being given quarters, Bright Eyes was given visual stimuli test by Lieutenant Uhura, who gave them his name "Bright Eyes". They were able to understand by using the Fibonacci sequence. (TOS - Year Five - Odyssey's End comics: "Issue 1", "Issue 2", "Issue 3", "Issue 4")