Larry

One of the first names that start with L that will come to mind.
Also the first of the seven Koopalings in the Super Mario series.

Person 1: Dude, I'm doing this Madlib and I don't know what to put!
Person 2: What do you need for the space?
Person 1: A name that begins with the letter L.
Person 2: How about, uhhhhhh... .............. Larry.
Person 1: PERFECT!

CosmoMoonn

CosmoMoonn is an Irish Twitch streamer who primarily focuses on Minecraft content, however plays a variety of games for her growing audience.

Person 1: “Did you check out that CosmoMoonn stream last night?”

Person 2: “Yeah! Her CryptidCraft are fun!”