Messy Marv was upset that Mac Dre became the symbol for all of Northern California's Hip Hop scene. He can't really show up in the Bay because people in several different cities are mad at him.
Let's begin our story in the 925: Messy Marv is actually from Pittsburg, for those of you who don't know, Pittsburg is a grimy little Bay Area city on the end of the BART Line. He's can't go to Pittsburg because people out there feel like he disrespected them by claiming San Francisco. Another strange fact is that he went to school in Concord, like his entire life, his parents did that because they didn't want him in Pittsburg's fucked up schools. Apparently he tried to claim he was down with the Surenos on Monument BLVD while in Concord, even though they were having wars with the Norternos in Pittsburg. When he was at home in Pittsburg he tried to down with the Northenos. It's weird, but true. So he really can't come back to the 925.
Now onto the 707: Vallejo/Fairfield people have a serious problem with Messy because he dissed Mac Dre. If he were to pop up in Vallejo he'd probably get murdered. Apparently there's money on his head out of Vallejo, but that could be a rumor. But if people saw him over there, there would inevitably be problems.
Now lets talk the 415: Messy Marv is related to San Quinn, San Quinn is from San Francisco. Because they were related, Messy Marv got a pass in the Fillmore district and eventually the neighborhood claimed him as one of their own. In the early 2000s, there were high hopes for the "Fillmoe 3", which was Messy Marv, San Quinn and Andre Nickatina. During this time Messy Marv was actually getting attention from major labels, he went to L.A. to meet with execs, he stayed in LA for awhile, and guess what he did? He started claiming he was a Compton Blood. Guess who was annoyed by this? The Fillmore District. San Quinn told him to stop saying he was a Blood, so Messy Dissed him, but it was awkward because they're family and San Quinn isn't even a violent dude, he was a drug dealer, but he's a good guy at heart. But a lot of other people from SF weren't so keen on keeping the peace, so he can't really go to SF. It doesn't matter what Berner says. Berner is just scared that SF's Hip Hop culture is dying due to gentrification, and thinks maybe Messy can bring SF back, because back in the day, Messy was a big deal in the Bay Area rap scene and had a few national songs, "Playin' With My Nose" was a underground hit nationally, and is what garnered the label interest.
Now onto the 510:
Messy Marv almost had a deal with Jive Records, but it ultimately fell through. At the time, Too Short was helping Messy out with the deal, because Too Short was also on Jive. The Label decided not to sign him, because he was hanging out with Bloods and doing crack cocaine, so Jive figured he wasn't a good long term investment. Messy felt Too Short didn't do enough to get him signed, and secretly thinks Too Short was the reason the deal didn't work out. So he dissed Too Short, and Too Short dissed him, and Too Short has real street dudes around him, so there's that. Then Messy Started Dissing Oakland as a whole for a second, then he talked shit about Mistah Fab's daughter. He said she was a crack baby and that she's fat and ugly. So him and Philthy started going back and forth.
There's more, but you get the picture.