Housemon

Housemon is literally a giant house, and is a minion of the Dark Master Puppetmon. It appears in the episode Ogremon's Honor. Puppetmon activates Housemon to battle the DigiDestined when he loses his hammer and is forced in a corner. Technically, it is not a Digimon, but more rather a "toy" that Puppetmon made himself.

Digimon Adventure (manga)
In the TOKYOPOP adaptation of the anime series, Puppetmon's mansion is a Digimon called Housemon. Housemon proves to be a powerful adversary, driving the DigiDestined back. It is destroyed when Puppetmon is defeated by MetalGarurumon. The other DigiDestined know that Puppetmon was defeated after his section of the tower disappears.