Iroh and his nephew Zuko shared a deep and complex relationship in the Avatar series. Iroh always cared for Zuko, even considering him as his own son after the death of his son Lu Ten. Throughout Zuko's banishment, Iroh was a constant mentor and source of guidance, offering advice and support in every way he could. However, their relationship was tested when Zuko betrayed Iroh and sided with Azula. Despite this, Iroh never lost faith in Zuko. He eventually broke his silence and revealed to Zuko that Avatar Roku was his maternal great-grandfather, suggesting that Zuko could redeem their family by helping to restore balance in the world. Even after Iroh's passing, Zuko continued to show admiration for his uncle, and their bond remained strong.