Klay Thompson clearly isn't a fan of Ronnie 2K -- and he proved that by going after the video game influencer and straight-up calling the guy a "clown."
The face of the NBA 2K franchise made an appearance on ESPN on Monday ... where he said players who want a better skill rating need to play better and stop bribing him with shoes and other perks.
Klay -- who's publicly had an axe to grind with 2K recently -- went after Ronnie in the comment section of the video clip .