These are Star Trek HeroClix I.K.S. Amar models (from the Tactics IV set), after painting and rebasing. Compared to the normal HeroClix Klingon battlecruisers, they have extra bits sticking out from the front of the wings and from the neck, as well as other differences in detail. In most Star Trek lore the Amar is the quintessential K’t’inga class. The card that came with these models mentions the Kelvin Timeline, so that may explain the differences.
Edit: A photo of an unpainted Amar is added.