...Wait, is this a mecha... toilet? What?

"Washlet Apray Rifle"? Probably "Washlet Spray Rifle".

Looks like Metal Gear Rex to me

Colonel: Snake, a new Metal Gear prototype has been made. It's called Toilet Gear WIPE. Infiltrate the base and destroy it immediately.

darkmetalxx said:
Colonel: Snake, a new Metal Gear prototype has been made. It's called Toilet Gear WIPE. Infiltrate the base and destroy it immediately.

Snake: No. I'm on the toile- oh shit.

Artist's commentary:

Title: 便座ユニット
日本の便器は凄いらしいです。

Title: Toilet seat unit
Japanese toilet bowls seem to be superior.

Correction: 凄い = "impressive", not "superior".

As a side note, the "wipe hip" thing is because 尻 can translate to either "ass" or "hips".

This mecha don't take shit from anyone.

Its a god damn Battle Throne! YEAH!

i think i know what its power source is .__.