Digimon
This is a continuous theme throughout nearly every season. Some have this problem with actual siblings, and others tend to apply it to their Digimon.
- In the first season there was Yamato/Matt towards his brother and the youngest Digidestined Takeru/TK. Hikari/Kari spends a good bit of Digimon Adventure 02 trying to live up to her big brother Taichi's/Tai reputation as a leader. And let's not even get started on Ken Ichijoji, who's desire to live up to his dead brother's memory in his parents' eyes was the start of his whole descent into darkness.
- Taichi is overly protective of Hikari before 02 though. The best example, episode 48, when Hikari falls ill and Taichi borders on hysterics the entire time. Then we find out why he's so over-protective (Taichi took Hikari outside to play while she had pneumonia, and she almost died.)
- The twist of the knife is that Hikari never blamed Taichi for it. Quite the opposite: Hikari apologized to Taichi for not being able to kick the ball straight, which only made him feel worse and want to protect her "kind heart" even more!
- Jyou/Joe shows a bit of this towards Iori/Cody in 02. Though he did have some inklings of this to Takeru/TK already in the first series. Somewhat justified by the fact that he's not just the oldest of the main characters — he's also got two older brothers of his own!
- In Digimon Frontier, everyone was like this towards Tomoki/Tommy, but he seemed to especially look up to (and be stuck with) Takuya and Junpei/JP.
- Kouji and Kouichi. It went both ways, but especially Kouji towards Kouichi.
- Daisuke/Davis seemed to behave like this towards his Digimon partner, Veemon.
- In Digimon Data Squad, Masaru/Marcus and his Agumon were like that (Masaru even admitted that he thought of Agumon like his brother). Masaru also was very protective of his little sister Chika/Kristy.
- Ikuto/Keenan and his Digimon partner, Falcomon, were raised to believe they were brothers, and treat each other accordingly.
- Then there's Touma/Thomas, who has a little sister Relena whom he acts quite the same towards as Tai.
- Another example from Digimon Adventure — Sora acts extremely protective of her partner Biyomon, eventually spurring her Digivolution into Garudamon.
- In Digimon Tamers, Jenrya/Henry was rather overprotective of his youngest sister Shiuchon/Suzie. This behavior turned out to be a bad influence on her when she got her own partner.
- In Digimon Fusion, Nene's actions are based on trying to find her missing brother Yuu/Ewan.
- In Digimon Universe: App Monsters, Rei is extremely overprotective of his brother Hajime due to his Promotion to Parent.
