I'll try to update as often as possible...

 ALIEN UNDERSEA CREATURE CONCEPT 01

 ALIEN UNDERSEA CREATURE CONCEPT 02

ALIEN HELMET CONCEPT 03:

ZBRUSH

PARADISE LOST: PANDAEMONIUM

Lucifer's tower in Hell.

CASCADE:

"From over the rise, the Dark One approaches" 

From a screenplay I've written

100 Days From Now:

Alien Commandant Concept

TUNNELS:

Crawfly and his Men Concepts

ZBRUSH

 TUNNELS:

Elevator Concept

IMMORTALITY CRISIS:

For a Superman story I wrote 

CASCADE:

"The sound emanating from the sprout... is music."

From a screenplay I've written

PITCH BLACK SLAM CITY:

Internet Web Comic produced with Director David Twohy as a prequel to Pitch Black

100 Days From Now:

Alien Warrior Concept

100 Days From Now:

Alien Prison Concept

GEIRRA:

From a series I'm developing about hybrids 

ANTELOPE:

From a series I'm developing about hybrids 

DC TRINITY:

Batman, Superman, and Wonder Woman in front of their respective homes.

LIOP:
From a series I'm developing about hybrids 

DARKSEID:
DC's biggest bad ass

ZBrush

AKU:
Samurai Jack's arch nemesis

ZBrush

THE THING:
The Muscle from Marvel's Fantastic Four

ZBrush

BULLETHEADED HELLION:
Alien insect concept

ZBrush

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PARADISE LOST: WEAPON DESIGN

I was brought on by Director Scott Derrickson to design Angel and Demon weapons for mid-air battles. Below are some of the many I produced. 

CHAIN GRAPPLE:

Like casting for flying demons

ASSORTED BLADE DESIGNS

BEAR TRAP:
Like a great mouse trap in the clouds 

HARMONIC CHAIN:

Creates multi-frequency sonics

NET DEPLOYER:

Each pod deploys multiple "clawed" nets

LONG BLADES:

Forearm mounted blades extend reach during fly-bys

LIGHTNING STRIKER:

Like a match and flint, this weapon produces blasts of lightning

SCARF BLADES:

A mix of sword, whip, and bolo

LIGHT BOLO:

Spin it like Thor's hammer and a ring of light fires a laser-like column.

WEB DEPLOYMENT: 

Liquid filament-like spun glass deployed in an array, producing a razor-sharp, near-invisible web

ORGANIC BLADES: 

Hidden under skin flaps, these blades emerge when poised for battle.