I was aimlessly browsing Twitter today, and I found this.
Community member Hellkrai has created a whole Google Drive worth of high-quality Melee renders, for all characters and their alts. You can use them in any context, as long as you credit the creator by linking either to Hellkrai’s Twitter profile or to the Google Drive.
Model Credits: @Smash2Official / @AlGeorgeRomo
Feel free to check Hellkrai’s Behance profile to find more resources!