A simple mod with a lot of bugs quickly turned in to a lot more once I realized I had permanently modded the save in the same way I had intended to do the game. http://www.mediafire.com/?cb4yobmcpib2ir8 Enclosed is a save file that will run on any vanilla US version of Twisted Metal Head On for the PSP. Once you go to story mode, you'll see a save for Tower Tooth at LA. I can't unfortunately save the game at Big Blue Stadium, but the video below should allow one to get the basic idea of this mod: I started off by first modding the ISO, (I own the game, don't worry!) to copy Tower Tooth's files over Twister. This... had undesired results, as doing so for some reason makes him take on the host character's special ability, as you can see in the video below. HOWEVER, playing a story file from that ISO, (or any other mode for that matter) still causes the game to recognize that you're playing as TT, and thus, will load the REAL TT once you quit and go back to a vanilla game. On one final not guys, since I know very little of hex editing or creating NitePR/CoderPR/Action Replay codes, if anyone could decompile this save and find out what the game is doing to load TT, I might be able to make him fully playable in all the other game modes as well even in a vanilla game! Enjoy everyone! NOTE: upon completing story mode, the game will crash. Do not be alarmed, just reset your PSP. Simply put; it does this because Tower Tooth does not have an ending movie and the game doesn't know what to do next.