LuigiFan1 aka Star | MUGEN LuigiFan1's SSB Mario Bros Remastered Release Part 4/5 - Alex S Palettes @LuigiFan1akaStar | Uploaded 1 year ago | Updated 13 hours ago
Alex S fixed afterwards so each of them had 12 extra palettes. Some now is even more unique in style compared to before.

Round 1: BartekZioomPro/AndersonKenya1 vs CosmicMario/CosmicLuigi
Round 2: HotelMario/HotelLuigi vs Luiario/Maruigi
Round 3: MarioCyanHat/ShadowLuigi vs Reverse
Round 4: Nice vs PumpkinMario/PumpkinLuigi
Round 5: Silly1 vs Silly2
Round 6: SMG4/SLG4 vs WeedMario/WeedLuigi

Link: youtu.be/Q0wSWGEArFY?si=788LaHJCGPNQctqj
If you don't like the AI on these characters, you don't need to bother downloading them. I don't see it necessary they would have aggressive AI.