Amica Endura

On the planet Caminus, an Amica Endura is a Transformer's long-term best friend. For a species that can live for millions of years, that sort of lasting friendship is a big deal.

A related-but-distinct concept is the Conjunx Endura, the equivalent of a spouse.

Fiction

IDW Generation 1 continuity

Nightbeat questioned Nautica if she had a Conjunx Endura, any Amica Endurae, or if her homeworld of Caminus practiced any sort of elective kinship. The answers were "no", "yes", and "yes". slaughterhouse It turned out on Caminus, you had to get an Amica by ten megacycles or you were generally eschewed by society, and not killed, as Nightbeat feared for a moment. Nautica and Firestar formed an Amica couple out of mutual desperation, though their relationship was strained. The Sensuous Frame Thankfully, it got a bit better. The Frail Gaze

On Caminus, the Oath of Constancy is said to form an Amica Endura. The Frail Gaze

Aileron, another Camien, was about to describe Sterling as her Amica Endura to Optimus Prime when she stopped herself and went with the Cybertronian equivalent, "best friend", instead. Aphelion

Ask Vector Prime

Stealth Saber and Victory Bomber were Amica Endurae. Ask Vector Prime

Notes

• Nautica remarked most people would sidle up to those questions, making it rather gauche to ask outright.
• "slaughterhouse" did not explicitly say what an Amica Endura was, leaving it up for us to work out, but it was confirmed later by James Roberts. Later, in "The Sensuous Frame", Firestar defined the term as "best friend".