So heroes of the storm has a mechanic where if u click on a character, they starting saying things. these are mostly just jokes and not canon but some of them are actually quite interesting.
Tracer:
since she was the first overwatch character in Hots most of her jokes are related to stuff we already knew or just generic time jokes. the closet thing to “lore” is that apparently she once left some peanut better in reinhardt’s helmet and winston got his head stuck in it trying to eat the peanut butter : /
Zarya:
Again some stuff about her stength needs to be shared, and how she sacrifed things for her country. nothing new but still true to her character
Lucio:
One of his lines, is him saying how he actual likes the music reinhardt listens to. he also didn’t name lucioball. hmm
D.va:
One of her lines is her saying that her make up whiskers are suppose to be warpaint. a more interesting line from her “Can we wrap this up? I’ve gotta big test tomorrow. And if I get anything less than 100%, I’m blaming you” which can be taken in many ways. perhaps she’s still in school? or maybe the test is related to her meka squad? its quite interesting.
Genji:
He mentions how her view his body less as a weapon and more as a “high-tech prosthesis”. his favorite animal is also a “gray fox” but this is possibly just a metal gear solid reference.
Ana:
on of her lines is “Having faked my own death, I can never return to Overwatch. You have no idea how serious they are about insurance fraud.” so ana has canonically committed tax evasion. : o. she also mentions the photo with the two unknown overwatch members in it. of coure thought the game replaces their names with (REDACTED) because of course.
Hanzo:
He’s confused as to why people view him as a villian, (he thinks its the beard) so maybe he views him self as more neutral? i dunno
Junkrat:
Junkrat actually does have an interesting line that being “These bombs aren’t cheap, you know. They cost an arm and a leg! (laughs) I’m joking. They only cost me a leg.” meaning that he definitely blew off his leg, but its unknown whats happened to his arm. this lines up with a interview with jeff kaplan where he mentions “here’s a guy who blew his leg off and thinks it’s the funniest thing ever” so this seems to imply that something else happened to his arm. he also mentions how he made his frag launcher, pretty much confirming what we already know, that he builds his own weapons.
SO yeah most of heroes of the storm lines are just jokes, and most them are non canon, but i did find a few interesting lines. you can find the lines on the wikis or on youtube.