Aries Spears Dubs Tekashi69 as Cartoonish and Clownish

Aries Spears wants to know -- what's the difference between Tekashi69 and the cartoon character Rainbow Brite? Aries seriously can't tell the difference.

We got the comedian at LAX Sunday and wanted to get his take on Tekashi's new beef ... this time with The Game. As we reported ... Tekashi bragged that "a kid with rainbow hair got the whole industry right now aggravated." Game fired back with a veiled threat.

Aries went the LOL route (because, of course) ... comparing Tekashi to the Hallmark character responsible for making the universe bright and beautiful. Some would argue none of that describes Tekashi, but point made ... the dude's a character, to say the least.