Today's Fact
The team's most impossible headquarters was not found, inherited or donated. Pym improvised it out of a collapsing laboratory.
By 2009 Hank Pym was working out of a Pym Pocket — a laboratory folded into its own slice of space, its doorways stepping straight out onto points all over the world. When H.A.M.M.E.R. pressure forced his partner Jocasta to cut the pocket loose from its anchor, the whole base began drifting toward dissolution, with less than two days before it vanished entirely.
Saving it meant stealing from friends. The one tool that could re-tether the lab was the Dimensional Wave Inducer built by the late Bill Foster, then held by the Fantastic Four — so Pym's Mighty Avengers broke into the Baxter Building to take it, and only mid-heist did he talk Reed Richards into handing it over willingly, in Mighty Avengers Vol. 1 #25–26 (2009).
With the Inducer and Jocasta woven directly into the structure to hold its gateways together, the rescued lab blossomed into the Infinite Avengers Mansion in Mighty Avengers Vol. 1 #27 (2009): a headquarters countless miles long inside its own dimension, growing new rooms on demand, its doors opening onto any crisis on Earth. Entry required a subatomic key implanted in the palm.
Why It's Obscure
Real estate agents hate him: infinite square footage, zero property tax, doors that commute better than anyone on the team.
Gallery
Pym in the Wasp mantle he wore while building it, his Mighty Avengers in the field, and the android who became the Mansion's beating heart.



Sources
Every fact on this page was checked against at least two independent sources before publication.
Bullpen Bulletins
- Mighty Avengers (Pym) (Earth-616) — Marvel DatabaseRecounts the untethered Pym Pocket, the Baxter Building raid for the Dimensional Wave Inducer, Jocasta's integration, and the creation of the Infinite Avengers Mansion.
- Hank Pym — Multiversal OmnipediaDetails the Mansion as an extradimensional base countless miles long with matter replication and dimensional doors to any location in the world, keyed by a subatomic implant.