Truth: Saved Ladybug from Truth, didn't ask her too personal questions, helped her so she won't blurt out her secret identity, respected her decision
Lies: Sacrificed himself in the white void so Ladybug could fix everything
Gang of Secrets: assured Ladybug that he was there for her, distracted the gang and averted their focus
Furious Fu: Helped Ladybug a ton in the rigorous battle
Sole Crusher: Saved Marinette from Sole Crusher with his baton
Queen Banana: Distracted Queen Banana
Gabriel Agreste: Saved Felix, helped Ladybug
Mega Leech: Distracted Malediktator
Guiltrip: Helped with Pigella, cataclysmed Reflekta's akumatized object
Crocoduel: Helped Ladybug
Glaciator 2: Got Marinette to a safe place, drove while Ladybug faced Glaciator, helped Marinette practice her confession, reassured Marinette, comforted Marinette, sympathised with Marinette, apologized to Ladybug
Hack-San: Got used to Scarabella and encouraged her, helped in a hard battle and tried to understand Ladybug even though he was sad
Rocketear: Tried to comfort Nino, surrendered to Rocketear, battled
Wishmaker: Handled Ladybug
Simpleman: Helped Ladybug
Dearest Family: Cheered up Ladybug, understood the dilemma she was facing, transformed as Astrocat and singlehandedly destroyed the galette
Ephemeral: Transformed as Astrocat and helped Ladybug revert everything
This is just how much I remember and ONLY of when he's transformed. Mind re-checking your logic?