So, you're newly out of the closet. Likely in your late teens or early twenties, the world can be a confusing place for a young queer person (especially in pre-New Millennium works). How do you find a date? How do you transition? Where can you meet people similar to you?
Here is where this trope comes in.
The protagonist will meet an older character. Out, proud, and confident, they will help the lead with their troubles and be a shoulder to cry on if things go sour along the story. They also inspire the protagonist and show that not all queer people end up miserable and/or dead.
A large number of Coming Out Stories have this type of character. They're almost never a Love Interest (and oftentimes they are in a relationship already). Instead, they're more of an older sibling figure and a confidant to the main character. If they're in a relationship then they and their partner might act as a Beta Couple to the lead.
- In Bloom Into You, Sayaka, who realized her liking girls was not just a phase after meeting with Touko, seeks advice from Miyako, a lesbian café owner who's in a relationship with Sayaka's own teacher Ms. Hakozaki. It's partly thanks to her conversations with her that she eventually finds the courage to confess her feelings to Touko.
- In My Brother's Husband, Mike Flanagan, a gay Canadian visiting Japan to meet the family of his dead Japanese husband, ends up mentoring Kazuya, the gay teenage elder brother of a school friend of his niece Kana.
- Wandering Son has Yuki Yoshida, a trans woman Takatsuki meets while out as a boy for the first time. She's the Cool Big Sis for Takatsuki, Nitori, and to a degree Makoto later on.
- Our Dreams at Dusk focuses on an LGBT-friendly drop-in center where people of several age groups regularly converge, and several dynamics like this form naturally between the characters. Tasuku, the protagonist, is particularly drawn to Haruko after seeing her with her wife, Saki. In turn, Haruko recognizes Tasuku is in the closet and looking for community, and she helps bring him into the fold and later becomes the first person he comes out to.
- Meanwhile, Tasuku wants to become a figure like this to Misora, a younger patron, after remembering how alone he felt when he was younger and frightened by the realization he was gay.
- While it's hinted that Misora would like to have a relationship like this with Tasuku, Tasuku realizes that the person Misora truly looks up to is "Someone," glowing upon receiving praise from her and admitting his admiration of her mystique and aloofness. Unfortunately, the qualities he admires so much mean that Someone isn't actually that good of a mentor figure, and when Misora reaches out to her after the events of Chapter 9, he's left even more hurt when she is unable to offer him any comfort or advice.
- Shounen Note, Yuhki Kamatani's pre-Dreams work, has Minoru Aoi, a former soprano who becomes a sort of mentor for the choir as a whole. Minoru is initially introduced as Yutaka's big brother, but one day Mito runs into them wearing a skirt. Upon being questioned about it, Minoru displays a casual, almost fluid relationship to gender. Mito, likewise, is initially introduced as a girl but is uncomfortable with "feminine" things and longs for a deeper voice, hinting him to possibly be a closeted transgender boy. Mito forms a sort of Intergenerational Friendship with Minoru and later is inspired by them to try dressing in a way more comfortable to him.
- Love Me For Who I Am has Satori Iwaoka, the owner of Café Question. Satori's only sibling is Tetsu, but she often acts like a Cool Big Sis to the whole staff of the café, and as a Transgender woman she's often able to empathize with their issues and offer advice and support. In particular, when Mogumo's presence in the first volume leads to a rift between the staff over their standard "I'm a guy dressed as a girl" introduction, she encourages all of them to share their point of view on the issue to come to a compromise. This eventually resolves in Mogumo being able to stay in the café without compromising their identity and helps Mei realize she was a closeted trans girl.
- Hana in Tokyo Godfathers was taken in by the owner of a drag queen club when she was younger. Around halfway through the movie Hana goes to "Mother" for help and she's overjoyed to see her again, taking her, Miyuki, and the baby in for the night without question.
- In given Uenoyama has a heart-to-heart with his college-aged bandmate Akihiko, during which it comes out that he's crushing on their newest bandmate, Mafuyu. Uenoyama gets uncharacteristically vulnerable, asking Akihiko if he thinks there's something wrong with him. Akihiko calmly reassures him that he's fine, going as far to reveal that he's been with men himself, turning it around and pointing out that Uenoyama won't say there's something wrong with him.
- In The Legend of Korra: Turf Wars, the older Kya serves as this towards Korra (the titular character) and her girlfriend Asami.
- In Avengers Academy, Julie Power serves as a mentor to the newly-out Striker, though she is continually frustrated that Striker keeps using his sexuality to draw headlines.
- Implied in the Land of Oz one-shot The Road Built in Hope. Dorothy stays with a lesbian couple in San Francisco for a while. Dorothy is a bit young for romance, but her affections for Ozma are likely to develop as she ages.
- Moving is a one-shot fic for The Children's Hour film where Karen, drifting aimlessly after her best friend Martha's Gayngst-Induced Suicide, ends up rooming with a woman. The woman is a trans lesbian who takes Karen in and helps her come to the realization of her own bisexuality.
- Long-time gay Miss Alice Band is this to new Assassins' Guild graduate Jocasta Wiggs in Discworld fics by A.A. Pessimal. in fact, there is a possibility Alice acts as a mentor and a discreet help to young Assassin students who have reason to suspect boys will not feature more than incidentally in their lives. (She was, however, professional enough as a teacher to wait till after Jocasta had graduated. She knows where the line is and not to cross it.)
- Being unashamedly bisexual/pansexual, Minako is this to the rest of the Senshi in But You Won't Have To Do It Alone. She admits that she can't relate to her friend's gayngst well, being that she never had any issue with her sexuality, but she's always there to be a shoulder for sympathy or advice.
- In A Song of Grumbling & Cotton Candy, Pizzazz calls her groupie Clash and her girlfriend Blaze upon drunkenly asking Jem out on a date. Clash actually cheated on Blaze with Pizzazz once, but Pizzazz is still in heavy denial over being lesbian and has no clue how dating women works.
- In Denounce the Evils, Harley has been living as a woman for a while now. James asks her for advice about his gender questioning.
- Warriors Rewrite: Firepaw is trans, as is Redtail. As a result, Redtail offers to be there for advice for the younger cat.
- In But I'm a Cheerleader, which takes place in a gay conversion camp, Lloyd and Larry are an older gay couple who met at the camp. They help sneak the characters out of the camp and into the local gay bar and generally introduce the kids to what life is like as an out person. When Dolph and Megan are thrown out of the camp, they even take them in until they can live on their own.
- I Am J:
- After running away from home for a few days, seventeen-year-old trans boy J meets Marcia. She's a trans woman who visits the motel looking for runaway teens to give them advice. Marcia recommends that J visit a shelter for LGBT teens. She's a bit character who only appears in that one scene, but she has a major impact on J's Coming-Out Story.
- Chanelle, who goes to J's high school, is a twenty-year-old trying to graduate (with the cut-off age being twenty-one). Chanelle is a trans woman herself, and she acts as J's older sister-esque friend who helps him where his cisgender Childhood Friend Melissa cannot.
- J meets Zak, an older trans guy, at a support group for transmasculine people. He helps inspire J and is his sole male friend.
- Two of Annie's teachers reluctantly play this role in Annie on My Mind. They're closeted and in a Secret Relationship. After both they and Annie are Forced Out of the Closet, Annie begins opening up to them about her relationship with Liza. In Annie's case, she uses them as a basis on how she doesn't want her life to be. Annie doesn't want to stay closeted forever.
- Supergirl (2015): Maggie serves as this for Alex when she comes out, with this role and the related fact that they're in very different positions in life being reasons that Maggie gives for initially turning down Alex despite being attracted to her.
- In Pose, Blanca finds herself pressed into service as Damon's queer mentor because he is so virginal that he barely even knows how to kiss someone properly.
- Age-inverted in Crazy Ex-Girlfriend: Middle-aged Daryl only realizes he's bisexual when he realizes he's attracted to the much younger White Josh, who has been out since he was twelve. Despite being younger, White Josh serves as Daryl's mentor thanks to his much more profound experience with being gay.
- Mildly age-inverted on Will & Grace. Jack is younger than Will but was out before Will and even realized that Will was gay before Will did.
- Love, Victor: Simon, who had gone through his own coming out journey in the original movie, serves as a mentor to closeted Victor, giving him advice through messages on Instagram. In the episode "Boy's Trip," Victor takes a trip to New York to visit Simon, and Bram and the rest of his & Simon's friend group fill the role of supporting Victor.
- Subverted on Schitt's Creek. Jocelyn enlists the Camp Gay David in talking to a gay student who isn't fitting in. The boy rebuffs his advances because he has no interest in fitting in their conservative small town.
- In A Normal Lost Phone the main character Sam seeks community in an online forum called Be You and finds guidance and comfort in several of the older members, including Harry, a trans man who lives in her city.