What special movable or removable features does this model kit include?

It includes a removable Zoid Core inside the torso and a ten-shot self-guided rocket launcher on the shoulder that can be opened and closed.

Does the cockpit hatch open, and can the included figure be seated inside?

Yes. The cockpit hatch in the head opens and closes, and the included Karl Lichten Schwarz figure can be seated inside.

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Kotobukiya ZOIDS - Iron Kong Schwarz Special 1999 Recolor Model Kit - ZD195

The cockpit hatch in the head opens and closes, and the included Karl Lichten Schwarz figure can be seated inside.
The Zoid Core inside the torso is removable.
The ten-shot self-guided rocket launcher on the shoulder can be opened and closed.
The clear parts of the cockpit on the head come in clear green as well as a colorless clear that can be customized with model paints in colors of your choice.
Water-slide decals are included, including for the first time the emblem of the 1st Armor Division, so users can fine-tune the look of their Zoid.
Height: 11.8" (1/72 scale)
Materials: PS?PE?ABS?PVC?Synthetic Rubber
Package: Closed Box
Sculptor: KOTOBUKIYA
Ages 15+