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Evil Lair Hill, obvious in the title, is Bird Brain and Zippy's evil lair, and where they live. It was seen in Mom-A-Geddon, Thunder Dog, and Booby Trap.

TriviaEdit

• It's unknown what the two bird houses attached to the evil lair are for. Probably Bird Brain's dwellings.
• Bird Brain's lair conforms with the archetype of supervillain lairs being located at high elevations (i.e. mountains, hills, plateaus)
• The house number for the lair is 80085. If looked at closely, it can look like it says "BOOBS". It was most likely intentional to make a call on Bird Brain's species.