Tighnari is a playable Dendro character in Genshin Impact. He is the stern Chief Officer of the Forest Rangers and Collei's mentor. Despite his intelligence, he prefers to live a solitary life in the depths of Avidya Forest rather than in the ivory tower of Sumeru Akademiya.
Being a Forest Watcher, Tighnari is highly knowledgeable about various species of both plants and animals, particularly flowers and mushrooms. He spends a great deal of time in Sumeru's rainforests, studying various species of plants and ensuring that the ecosystem is healthy and balanced. As the Chief Officer of the Forest Watchers, he takes his job very seriously and offers advice to those willing to listen and sternly lectures those who don't. He is very loyal to those whom he considers his friends and cares about them very deeply. He has very sensitive ears, not being very fond of thunder or wind since they greatly affect them. He is also not fond of the desert; he cannot take the heat well due to his constitution and is prone to heatstroke.
Lyney is a playable Pneuma-aligned Pyro character in Genshin Impact. Skilled and eloquent, Lyney is Fontaine's Great Magician and Lynette's twin brother. After their parents' death and having been saved from an abusive noble by their "Father," Lyney has undertaken missions for the House of the Hearth and has said that he will eventually become the successor of "Father."
Lyney is a skilled magician who enjoys the showlight. He is, at first sight, very easygoing and friendly compared to his siblings Lynette and Freminet, who are reserved and introverted respectively, though he is said to be much quieter when alone with his sister. He cares greatly for his siblings, wanting to ensure that they have a home to live in and looks out for them whenever possible, becoming extremely irrational should their safety be threatened. Despite all his cheer, Lyney has a dark and traumatic past with his sister, but they have a very good relationship, likening it to the only truth in a world full of lies and falsehoods. As a result, he is willing to do anything to stay with her. Lyney is also implied to quite "proud", wanting to prove himself without relying on others.