Issue: #285 MJ
Last valuation update: 2025-09-24
Dr. Tzin-Tzin escapes from prison with the intent to steal something precious from Gotham: Christmas!For the Italian translation of this issue, see Batman #20For the Spanish translation, see Batman #929 (Novarro)
First appearances: Slud-Jak
Creators: Jim Aparo, Julius Schwartz, Neal Adams, Romeo Tanghal, David V. Reed, Frank Springer, E. Nelson Bridwell
Characters: Batman, Alfred Pennyworth, Dick Grayson, James Gordon, Slud-Jak, Dr. Tzin-Tzin