Here's Lou's last drawing for now until I go back to drawing him a few more times. This is another drawing of him in his demonic form and this time I chose to draw him in full body since I had not done this before.
The design is not exemplary symmetrical since the legs are too short and there seems some kind of atrophy in the thigh muscles, my apologies if the design is not to your liking.
I tried to do my best to bring it to life in this drawing and I hope to improve in the next ones.
I hope you like it and if you liked this drawing, feel free to comment or favorite; your opinion will always be welcome!

More info about Lou below:
"Lou is a devil type of character playable in Guitar Hero III: Legends of Rock, and is the last boss guitarist. Lou is unlockable once you beat him in a Guitar Battle at the end of any career on any difficulty. His name is a reference to Lucifer. You also unlock his Guitar called the "Obliviaxe", which looks like a skeleton corpse (the headstock is a horned skull, the fretboard is a spine, and the body is a rib cage).

In single-player mode, Lou originally poses as the manager of the player's band. He signs the band after the performance in Mitch's Moose Lounge, unknowingly giving Lou possession of their souls. Lou reveals himself after the gig at Kaiju Megadome through the contract in red printing at the bottom claimed "Your soul is mine", along with flared red eyes. He also reveals himself as the god of the Rock Underworld, Hades.

In the Co-op story, Lou appears after the band members are arrested because of the fire inadvertently started by their encore performance of Cities on Flame with Rock and Roll in their Backyard Bash. Lou makes a deal to set the band free as long as they perform for the prison inmates. Doing so, as soon as they step out of Shanker's Island, Lou drags them down to his domains.

Favorite metal genres: Heavy Metal, Doom Metal, Black Metal, Death Metal.

Description:
Lou's his name and gathering souls in exchange for musical prowess is his game. Meet him at the crossroads and leave your nerves on the porch or prepare to spend eternity tuning his guitars. Definitely a dog person.

Likes:
Collecting souls, puppies, his home Lou's Inferno and his good buddy the Grim Ripper.

Deslikes:
Getting tossed into lava pits.
The God of Rock.
Sweetness (such as Midori).
Having his plans foiled.
His foes (shown in Guitar Hero Smash Hits as Axel Steel, Lars Ümlaüt, Casey Lynch, and Johnny Napalm) and Metallica ." - Source: WikiHero.