When Japanese manufacturer Kawasaki developed the C-2 as replacement for the much smaller C-1, it clearly looked at the McDonnell-Douglas C-17 for inspiration. The nose of of the C-2 is slightly more pointed and the the cockpit windows include eyebrow windows and feet windows. These windows are actually the same as for the Kawasaki P-1, except for the feet windows. The tail has the same appearance as that of the Globemaster: it seems to be wider at the top than at the base. The C-2 has two big turbofans under the wings and three sets of two wheel main landing gears on each side. Finally, it lacks winglets.
This is the standard transport version, without the bulges and antennas mentioned for the RC-2 below.
Apart from the standard transport version, the JASDF also has a single electronic intelligence (ELINT) version, designated as RC-2. It has multiple radomes on front, top, side and rear of the fuselage, as well as on top of the vertical stabiliser.
Confusion possible with
Like the C-2 the two big engines make the An-178 look small, and it actually is smaller than the C-2. Furthermore the Antonov has no eyebrow nor feet cockpit windows and two tandem wheels on each main landing gear.
Although there is one big difference - the C-2 has only two engines - the similarities between the C-17 and C-2 are clear, especially when looking at the nose and tail. Additionally the C-17 has winglets and is bigger.