Kingambit

Kingambit fills the role Garchomp typically holds on Sceptile teams, providing fairy coverage with Iron Head and threatening opposing Kingambits with Low Kick. Defiant turns Incineroar and stat-dropping moves into attack boosts, and Chople Berry lets it survive a Fighting-type hit to punish the opponent. Sucker Punch adds a priority option that pairs with Basculegion-M Aqua Jet for surprise double priority turns. The Speed investment lets it outspeed Adamant Sneasler and slower max Speed threats. This choice avoids stacking the ice and dragon weaknesses that Garchomp would add alongside Mega Sceptile.