Ubu's blind obedience made him a mostly silent accomplice in Ra's' terrorist plots. Ubu drew no views of his own and just did what his master ordered. He has only shown feelings of hatred for Batman, who turned down Ra's' offer of succession, but after Batman saved his life, Ubu developed a respect for him and willingly gave him his canteen of water in order to survive after Ra's al Ghul stranded him in the desert.
Afterward, Ubu was complicit in Ra's' plot to kidnap Superman in an attempt to drain his powers to heal Ra's as the Lazarus Pit no longer had any effect. Though successful in revitalizing Ra's, they were thwarted by Batman.
In the DC Comics, "Ubu" is a title passed on through many generations as the manservant of Ra's Al Ghul. Others, such as Bane, have taken the title as well. It's unclear whether the DCAU Ubu is one person or a title, though it's noteworthy that he was voiced by a different actor in all his appearances.
- O'Neil, Dennis (writer) & Altieri, Kevin (director) (May 3, 1993). "The Demon's Quest, Part I". Batman: The Animated Series. Season 1. Episode 57 (airdate). Episode 60 (production). FOX Kids.
- Reaves, Michael (writer) & Altieri, Kevin (director) (May 9, 1994). "Avatar". Batman: The Animated Series. Season 2. Episode 8 (airdate). Episode 69 (production). FOX Kids.
- Altieri, Kevin, Dini, Paul, Timm, Bruce W. (story) & Lansdale, Joe R. (teleplay) & Altieri, Kevin (director) & September 12, 1995). "Showdown". Batman: The Animated Series. Season 4. Episode 2 (airdate). Episode 78 (production). FOX Kids.
- Fogel, Rich (writer) & Riba, Dan (director) (September 18, 1999). "The Demon Reborn". Superman: The Animated Series. Season 4. Episode 1 (airdate). Episode 51 (production). Kids WB!.
- Dini, Paul (writer) & Tucker, James (director) (October 21, 2000). "Out of the Past". Batman Beyond. Season 3. Episode 5 (airdate). Episode 44 (production). Kids WB!.