Inkay remained on Lexi's team for a very brief time, only being with her for short period in Sinnoh and while traveling to Kalos. In was revealed that Inkay was in fact a double-agent for Team Flare's Celosia, who previously owned the Pokémon but gave it away to Tierno. Tierno had made it clear that he was heading to Sinnoh to see the 'famous' Alexis and Celosia used it as an opportunity to give him the Inkay, who he would give up due to it's lack of dancing skills a while later. While being under the ownership of Lexi, it received and transferred information about Lexi and her plans back to Celosia. During a confrontation between Team Flare Grunts and Lexi, a Litleo was revealed to have been kidnapped by the grunts. Feeling betrayed by Inkay, Lexi swapped Litleo's Pokéball with Inkay's therefore trading the two, before the Team Flare Grunts fled, not knowing what had taken place at that moment in time.
Inkay returned under the ownership of Celosia during the Team Flare takeover. It's unknown what happened to Inkay after Celosia's death.