2nd Dimension

The 2nd Dimension is a Alternate Dimension in the Phineas and Ferb Universe, notably it's a universe were Dr. Heinz Doofenshmirtz took over the Tri-State Era. it made it's debut in Phineas and Ferb: Arcoss the 2nd Dimension where it was up to Phineas, Ferb, and Perry to defeat 2nd Dimension Doof. it reappeared in Tales of the resistance: Back to The 2nd Dimension.