I would say PKSparxx but I doubt they know each other, plus PKSparxx is more of a G-rated RU-vidr so I doubt even more that a collab between the two will happen.
I skip most of the collaboration videos when I go back and rewatch these but the ones with Lamarr are a must watch. He and Dashie are so hilarious together!
Funniest mario kart 8 collab yet. The chemistry between lamarr and dashie is the best. And have you noticed when he plays with other people besides lamarr he trys to tone it down a bit?