If we're still doing IRL troon encounters, I've got four, all MtF.
One was my "cousin" (close family friend) throughout childhood who, at some random point in high school, wanted to be called Gloria Fannybottom (not making this up) and obsessed over RuPaul's Drag Race. He stopped bathing, came to school in the same dirty pajamas for weeks at a time (and women's heels,) and he went from this totally normal looking kid to a dead-eyed, dark bagged, Alicia-ass serial killer face. He was giggling all the time, affecting a "gay" voice, and started compulsively lying about everything. The breaking point for me was when he said he had AIDs. I completely stopped talking to him. I think he lives in Florida now...? Which makes complete sense, actually.... Regardless, I can't understand what happened to him. He went from being a friendly boy scout to an absolute nightmare.
The second was a friend who came out as trans a few years ago. I had thought he was cute before, but now he looks awful. He's got the 5-head and looks like a fucking space alien, hair is thin and greasy, was bragging about his "a-cups" (bruh puffy nipples aren't any kind of cup) and through this strange sexual abuse my boyfriend was engaging in we had a brief make out session between the three of us and dude kissed like a vacuum cleaner. Traumatizing. He also went full DDLG on me when we randomly bumped into one another at the mall, and we went to build-a-bear and hung out but it got creepier and he tried to call me mommy and I just nope'd the fuck out inside my head. I told him later I wasn't comfortable with that and he apologized, so at least he did understand after the fact that boundaries are a thing. It's frustrating/sad how his whole personality became about being trans, like it just erased everything he was before. Makes you understand those Trans Widows.
Third one, and this is the one that made me peak, was a friend who I barely knew deciding to come out as trans out of NOWHERE. Of course, I barely knew him, so maybe it wasn't so out of nowhere, but immediately all his posts became about being trans and social justice shit and genders just like the last friend, but much more aggressive. Zero attempt at passing either. Literally his coming out post was a selfie of him wearing blue lipstick announcing his new name, otherwise completely male. What made me peak,was when he said pronouns just don't work because nobody's 100% male or female. I know about the whole neopronoun thing already, I've been an anti-sjw since ~2013, but for some reason I got so irrationally angry seeing him lecture a cis female friend of his in the comments.
Weirdly enough, after "Gloria" and before DDLG Dude, a friend of mine in another country transitioned MtF, but she's actually really normal. She passes, she went to therapy for ages before she started, and by all accounts she's still the same person but now she's happier. She doesn't threaten to An Hero at all anymore like she used to when she was a he, and she's really nice. So I don't know why she's so normal and chill when it feels like all evidence points to troons being insane by default, but it's been years since she transitioned and there hasn't been a single instance of weirdness. She's even married happily to a guy and there's no issues. Go figure.