Space Bards on the Youtube made a lil' rap video that sums up the feelings of many players regarding a certain Deep Gnome in under 2 minutes.
https://youtube.com/watch?v=ClezDg8n6uw
Going to take this as a go ahead to gush about how much I love the gnomes in this game. It will be a great challenge to make this brief.
First, Barcus is the ideal gnome. Goofy looking, goofy voice, loyal af, crafty, intelligent but naive, softhearted, and prone to getting into trouble (with that signature Svirfneblin cynicism). In general the gnome animations are so perfect, how they borderline prance when they walk and butt-scoot their way down ledges, but Barcus' little bouncey thing he does when you trade with him is just chef's kiss.
Second, Gnomes are absolutely prone to being enslaved/killed in large numbers. This had become such a running joke amongst my DnD group that every campaign had to at least hint at some sort of gnome tragedy. (My players once managed to cause three separate mass deaths in one campaign, so proud.) When I saw the gnome slaves in BG3 I was over the moon. It is so perfect, freeing the little guys just so they can inevitably fall right back into more shit later. It's the way nature intended.
Then finally, Wulbren is the perfect gnome villain. Just looking at his weirdly handsome face and serious expression for the first time, my brain went "This is not right". Then you get him to LastLight and see the kind of ass he is. Wulbren isn't the anti-gnome. He is still intelligent but naive, has his own brand of loyalty, and obviously can't stay out of trouble. But he lacks the all of the goofy charm you would expect, he lacks the massive heart gnomes are known to have. What is absolutely wild is that he, who probably suffered a lot of the same shit all gnomes suffer, decided that in return he was going to be the shit-giver. He's the gnome that broke. I have never before considered a story of a gnome being the one to genocide his own kind, but God I love it.
Then bonus, a few Barcus things that I just adore. If you talk to his corpse and ask for his name, he says "He called me Barcus". It is a major part of gnome culture to sort of collect a long list of names from friends and family. I think this line implies that "Barcus" was the name that Wulbren called him, and Barcus valued their friendship so much that he chose that to be his main name. If you get Barcus to Act2 but do not save Wulbren, he doesn't even get mad. He is obviously hurt, but tells Tav with a smile on his face "I'd tell you to write, but I don't check the post". In the after-party, you'll get a very short letter from him that basically says "Withers stopped by to tell me I should write a letter to my friends. Here it is. Return address included". Simple but oh so satisfying, binding those long apart phrases together.
Tldr: I fucking love gnomes and will continue to type forever if I don't stop myself soon.