The undercarriage is partly Gray with some parts being Green and the tracks are Dark Gray.  Under the tracks are four little wheels which allow it to roll on a surface since the tracks are not moveable.  The cabs windows are Smoke-Clear plastic that is clear enough to see one of the robots arm.

The shovel is connected to the center of the body which can be raised and lowed at that location.  The next joint on the arm has limited movement but the actual shovel is more giving.  The only disappointment with the arm/shovel is that it will not move below surface level to simulate actual excavation.

ROBOT MODE:  Transformation to robot mode begins with the removal of his shovel from the center of the excavator and extending the Green connector from the underside of BH 90 degrees.  The next step is to grab hold of the tracks pulling them outward creating an inverted "T" with the Light Gray parts.   Now extend the two Light Green parts on the inner side of the tracks which will form part of BH's feet as well as extending the tracks to reveal his knee joints.   Rotate each lower half of his legs so that the painted Green track housing/wheels are facing up.  Now separate the tip of the track to create a three-toed foot.

Bring in both legs closer together.  This collapses our inverted "T" joint that we created earlier and now should look like a "W".  Now fold down the Green connector which was one of the first pieces that we moved in the beginning.

Now we are working on the main body so rotate the entire cab section upward 180 degrees so that the cab is facing downward.  If you're looking right down the figure, you should see two flaps that need to be opened to reveal BH's head.  The head should be folded out and fit snug in it's slot.  Now separate the chest folding the halves back and extend the arms (formerly the cab) and hands or claws. 

BuildHurricane in Robot Mode.

Here's a close up photo of Hurricane's head.

Fold the shoulders back once more, fold the shoulder pads down, then rotate each arm in the proper direction.  The last step is to reconnect the shovel to BH's back at the hole on either side of his shoulder blade.   BuildHurricane now stands at approximately 8.5" in robot mode.

BuildHurricane has a spring loaded Shovel Scissors weapon that can be extended as shown in the photo above (clearer photo of Shovel Scissors on BuildKing).

BuildHurricane wears a green helmet with an Orange painted visor and Silver face.  The front/top of his helmet sort of looks like a shovel doesn't it?

BuildHurricane is a well proportioned robot with good articulation.  His legs provide good stability as well as poseability with the aid of his three-toed feet.  The only real disappointment is with his arms.  There should've been a joint added to allow BH to rotate his hands upward instead of always having his palms down.  Overall he is a nice looking figure and is the most articulated of the four BuildMasters.

NOTE:  BuildHurricane can be transformed into BuildKing's arms, either leg, as well as a weapon.