RoboDog

RoboDog was an evil robot created by Dr. Tenma to help him take over the world and destroy Kari and her friends.

Personality
RoboDog is a robot-like dog with no emotions, it has no qualms about hurting humans. It will even attack little children due to its programming. It captured Zoran and brought her to Dr. Tenma who held her hostage to make Astro Boy, her older brother surrender. After Dr. Tenma realized what he had done, RoboDog broke its programming and tried to destroy Dr. Tenma, but he was saved by Astro Boy who told him to do what was right. It was finally destroyed by Astro Boy with Mei's help.

Role in the series
RoboDog was created by Dr. Tenma to help him become ruler of the world. It was also created to destroy Kari and her friends who keep getting in his way. RoboDog made its first appearance spying on Kari and her friends and keeping an eye on Zoran waiting for the perfect time to capture her. While Zoran was walking home from school with her brother, RoboDog grabbed her in its jaws with Zoran screaming at it to let her go. An angry Astro ran after the evil robot telling it to let go of his little sister. Kari and her friends heard Astro's cries and they split up to corner RoboDog. Amy was the one who spotted RoboDog and tried to grab Zoran from it. But RoboDog unleashed a blast and aimed it at Amy, Astro grabbed Amy and flew out of the way just in time. Kari ran to check on Amy and told her friends to give up for the time being and that they would rescue Zoran soon and they went to report what happened to Dr. O'Shay, Inspector Tawashii, Sarah, and Sarah's husband. Meanwhile RoboDog was dragging Zoran in its jaws as she was kicking and screaming at it to let her go. It threw her into a cage and Dr. Tenma revealed his plans to Zoran who angrily told him that her brother would stop him, Dr. Tenma gleamed at her evilly and told her that's what he wanted. Kari, Astro, and their friends managed to tell their friends about what happened. An angry Dr. O'Shay tried to leap at the TV when Dr. Tenma was on it telling Astro to give himself up or he would lose his little sister for good as RoboDog would destroy her and shows Zoran in a cage to Astro. Astro decides to give himself up, but Kari pulls his arm and tells him she has a plan. Meanwhile RoboDog with Dr. Tenma on top of it is attempting to destroy little human children, but Astro blasts the evil robot with his finger laser telling Dr. Tenma to knock it off. Kari, Amy, and their friends help the children go to safety. Astro tries to reason with Dr. Tenma, but Dr. Tenma tells RoboDog to attack Astro and then bring him with it. As RoboDog weakens Astro and tries to drag him away, Angewomon destroys one of RoboDog's teeth causing it to whimper in pain. Astro releases himself and fights the weakened RoboDog. Angewomon grabs Kari and carries her out of the way just as RoboDog is rushings towards Angewomon to get her back for what she did to it and doesn't care that it could destroy little Kari in the process. Dr. Tenma then tells RoboDog to capture either Suzie or Amy and hold them hostage. RoboDog rushes at Suzie, but Antylamon grabs her out of the way. Amy having no Digimon is grabbed by RoboDog and is carried away screaming for help. Amy is tossed in the cage that Zoran is trapped in and Dr. Tenma gleams saying now he has two hostages. Tobio appears to Astro, Kari, and their friends where he promises to help them rescue Zoran and Amy and in return, they must help his father turn back to good. Kari promises Tobio they would do so and an light carries Astro, Kari, their friends, Dr. O'Shay, Inspector Tawashii, Sarah, and Sarah's husband to Dr. Tenma's lair where Kari spots Zoran and Amy who scream at them to help them. Dr. Tenma is playing the organ and tells the gang that if they step any closer towards the two girls, he would push the button and they would drop to the furnace below where RoboDog is waiting for them. Dr. O'Shay pleads with Dr. Tenma to stop this. Kari and Angewomon secretly sneak to where the cage is hanging. Tobio attempts to reason with his father and Dr. Tenma orders RoboDog to destroy Kari. RoboDog unleashes a blast at Kari, but Tobio saved her just in time and he manages to make his father see what he has done. Dr. Tenma cries out in agony and Astro manages to free Zoran, but Amy is slipping towards the furnace and just as she drops, Beezlemon and Sarah grab her and pull her up. Beezlemon asks Amy if she's hurt and Sarah checks her for bruises. RoboDog manages to break its programming and aims a blast at Dr. Tenma. Astro puts Zoran somewhere safe and he managed to rescue Dr. Tenma telling him to fix what he has done and that only he can do it. Dr. Tenma finally listens as he whispers how to stop RoboDog to Astro. RoboDog aims a blast at Amy, Suzie, Ai, and Kotone, but Tobio manages to have them follow him to safety rescuing them. Sarah blocks RoboDog from following Amy, Suzie, Ai, and Kotone and Beezlemon attacks it. Astro rushes over to RoboDog and tells Kari's partner, Mei to bite into it. As Mei bites into it, Astro aims his finger laser at RoboDog and tells Mei to hurry to safety as she as weakened it. Astro unleashes one deadly blast which destroys RoboDog for good. Zoran who is waiting with Dr. O'Shay asks if it is over and Astro says it is over. As Dr. Tenma is arrested by Inspector Tawashii, he leans down and apologizes to Amy and Zoran and their friends and thanks Tobio and Astro for helping him. Tobio nods and smiles. Tobio then reveals his true feelings of love to Kari who gently rejects him telling him that she already has a boy she loved: TK and Tobio tells Kari that he hopes TK takes good care of her and he peacefully passes onto the afterlife. Later, Astro bids farewell to the girls, but Zoran exclaimed that she wanted to keep traveling on fun adventures with her friends, Astro is about to reject the idea, but Sarah tells him to let Zoran have her fun since she had a rough day today and Kari bids Sarah, Sarah's husband, Nora, and Dr. O'Shay farewell and Zoran promises her brother she would come back as long as he isn't annoying putting her hands on her hips. The girls then travel into the world of Case Closed, awaiting their next adventure.