Really Really Incredibly Destructive Machine

The Really Really Incredibly Destructive Machine is, as its name quite bluntly indicates, the most powerful machine owned by Father and used by the Delightful Children From Down The Lane (with permission, of course).

Description
It has long metallic legs, giant metal tentacles, and numerous weapons and gadgets attached, including flaming chainsaws for hands.

Early Uses
The Really Really Incredibly Destructive Machine was introduced, where the DCFDTL used it to successfully destroy the Sector V Treehouse. They needed to ask Father for permission before using it.

[Fifth High School War
The Delightful Children From Down The Lane uses the Machine in the Final Battle, leading to the End of the "Great Eggman Day" only for the Professor XXXL's Machine to crash on top of it and destroying it without harming the Delightfuls.

Trivia

 * The Original Model from Operation: G.R.O.W.U.P., Operation: I.T., and Operation: H.A.M.S.T.E.R. is the only one that is not destroyed throughout the series.
 * The Original Model was completely destroyed in the Fifth High School War causes the Island in Space to fall into Dens' Pacific Ocean.