Like G502, Hyperion Fury comes in a small package, containing only the mouse itself and some additional reading material, though not in the classic Logitech novel style.
As it stands, G402 uses a plastic frame, with a textured right-side, and the backlit G-logo on the left. It's very similar in shape and design to the G502, just a bit more "minimalistic." While Proteus Core might have been the flashiest mouse ever built by Logitech, G402 is simpler, even though it's still a visually striking rodent.
It's flatter, longer and thinner than the Proteus Core, with no weight customization options. The heavy metal scroll wheel is replaced with a clear rubberized one (similar to the one on G602), and the top buttons are gone. The endless scroll feature has also been scrapped in the process. With only 8 buttons available, the mouse's clicky action is not very different from that of G502, which I guess is a plus.
While there are no plastic plates and no additional color other than black, G402 still stands as a very "gamery" type mouse. That's most because of its shape, with angular edges and oddly shaped buttons.
I expected the underbelly of this beast to be similar to G502, and while it retains the shape, there are differently sized PTFE pads. There are 6 slippy pads, three mid-sized ones, one large at the front, and two right around the sensor.
Since it has no weight customization options, G402 clocks in at 108 grams, which is a fairly light-weight offering considering its size.
I tested Hyperion Fury on several surfaces, ranging from rough cloth pads like SteelSeries' QCK Heavy and QPAD UC, to smooth ones like Logitech G240, CM Storm Speed RX or Tt Esports Pyrrhus. The mouse glides well on every surface, with almost no drag even on the roughest of 'em. This is mandatory for said mouse, because unlike G502 it's catered to the shooter audience, often one that plays at a very low-sensitivity (where the fastest mouse evarrrr bragging rights actually matter).
The tracking doesn't seem to differ from the rough surface to the smooth one, which is always a welcome thing.
Both sides feature rubberized grips, though only the right side is now textured.
Logitech has mode some modifications on the G502 design, changing the buttons layout a wee bit. Now, the Sniper button is easier to access, but the two side buttons, back & forward, are also further behind, with the back one being slightly out of range. The LED indicators are moved below now, right above the Sniper Button.
On the right side, the shape has been improved again, with a slightly more abrupt ridge for the fingers to rest upon. Instead of the intricate triangle pattern, Hyperion Fury features a stair-like texture, which helps holding the fingers in the right place.
Another thing lost in transition is the nicely braided cable G502 featured. Since Logitech seems to have cut corners with this mouse, it now uses a simple USB cable. There's no hook or tie present, which seems to suggest this is more of a budget offering.