Rockman / Mega Man, from the series of the same name. This model is from his appearance in Mega Man 11 / Rockman 11: Unmei no Haguruma!! (Gears of Fate!!).
Original model by Capcom, ported and rigged to the Source Engine for Source Filmmaker by Sneakyerz on Steam.

https://steamcommunity.com/sharedfiles/filedetails/?id=1544564186
https://steamcommunity.com/id/Sneakyerz

To install, navigate to your Tony Hawk's Underground 2 > Game > Data > models directory and choose either your Skater_Pro or Skater_Secret folder. Rename the files
for the model you want to use to match the Skater_whatever.skin.xbx and Skater_whatever.tex.xbx files and replace. This model is already set to replace the Imp 
in the Peds>Ped_Imp folder.

Also included are the dummy skaterparts files required for this and many other character model ports for Tony Hawk's Underground 2 / THUG Pro to work. If you don't
already have these installed, copy and paste all three .prx files to Tony Hawk's Undergound 2 > Game > Data > pre, and replace the original files with these ones.

IT'S HIGHLY ADVISED TO BACK UP YOUR MODELS FOLDER BEFORE REPLACING CHARACTER MODELS.

Known Issues: On most daytime levels, Mega Man's skin will be too bright. If there's a solution to this, perhaps something within Blender that I'm not aware of,
I would love to know so that I can fix this issue.