The Bat Imagin is the main antagonist for episode 1 and 2 of 2007 TV series called Kamen Rider Den-O and he's a bat-themed evil Imagin.
Kamen Rider Den-O
Possesses ability to create wings to fly and use sonic blasts as weapon, the Bat Imagin fulfills his contract with the Tetsuo for return of his jinglebell keyholder. Attacking everyone with a jinglebell keyholder. The Bat Imagin battled Den-O Sword Form, but the fight ended with him being defeated. However, he is revealed to still be alive. When he travels to the past, the Bat Imagin possesses Tetsuo's body and begins causing havoc until Den-O appears and forces him to abandon Tetsuo. And he is destroyed by Den-O, he then becomes Gigandeath Heaven and is ultimately defeated by DenLiner Gouka.
Kamen Rider Decade
A Bat Imagin appeared as one of several Imagin that attempted to get Natsumi Hikari to tell them her wish while she was trapped in shifting dimensions during the destruction of the worlds.
Kamen Rider × Super Sentai: Super Hero Taisen
He was revived in Super Hero Taisen crossover where he was battling GekiChopper.