Batman Unlimited: Monster Mayhem (2015) runs 1 h 21 min, is rated PG in the US and averages 6.2 from 165 TMDB members. The Joker is aided in his Halloween quest to render modern technology useless and take over Gotham City by Solomon Grundy, Silver Banshee, Clayface and Scarecrow.
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Streaming availability by JustWatch. In the US, as of 2026-11-08: YouTube Free (free with ads).
Batman Unlimited: Monster Mayhem on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-08. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists