Chon-kee, from beware of chicken. Chunky boi is the giant boar golden retriever we all need in our lives.

I like Zach from Mother of Learning, he's funny

Dross from Cradle

Arthur from The Calamitous Bob, Viv's greedy dragon daughter.

Eithan

Chad from Super Powereds. In later books he grows into such an amazing character

Loth from the Legend of William Oh. I love that super smart Kobold so MUCH.

Taika from HWFWM and it's really not even close! 

Vilastramoz, The Malefic Viper

Lute from Super Supportive had me jumping up and down yelling at my phone. Love that guy

Ogras from DotF, because he's the jealous, sarcastic, coattail riding side character we all would be if we couldn't be the MC.

Mara and Leon from Path of Ascension....I love all the scenes with those goofballs in them

Snowdrop from Pale brings joy to a scene in a way that few others can match. This was clear from her first few scenes where just mere hours after she was “born” she tricked people who captured her into thinking she was harmless and subsequently set their building on fire.

…I guess it could be her signature quirk that everyone hears the opposite of every sentence she says. For example this gem is one of my favorites out of the handful that appear throughout the story:

“I cede.”

Leaving the last one.

The one who had been following Avery for most of the afternoon. With glowing eyes when the rest of him looked like wet black ink.

He raised a hand, pointing.

At Snowdrop.

“Uhhh… Bye.”

“Stay,” Deb the Storm Chaser ordered.

Avery cleared her throat. “I should make it clear at this point, Snowdrop is actually-”

The man with glowing eyes pressed a finger to his lips.

“I’d listen,” Florin said. “He’s tichy.”

“Gilkey,” the Other introduced himself. “Distillation. Errand runner, spy. I would ask the familiar my questions.”

“You’re shit outta luck,” Snowdrop said.

“Those words may cut both ways.”

“I want to cut everyone here,” Snowdrop declared, hairs on her head standing up away from the scalp as she bristled from nervousness. “I’m not cooperating!”

Avery put her hand over her face, hoping that gesture helped convey the situation.

“All I ask is that you tell us about your master-familiar relationship.”

“She’s the worst! She’s actually a serial murderer, she hurts people all the time, she came here to hurt you! She’s an ambassador of war!”

“Snowdrop…” Avery groaned.

Cyril from Polyhistor Quest. Wonderful magic combat style, tragic backstory that still has open questions, and refreshingly straight forward mannerisms.

Richard from Metaworld Chronicles. He's the first to see Gwen's potential, and his undying faith in her coupled with his hyper competence means he's in for the whole ride.

That Wushu Lamdon guy from those books about that janitor is pretty decent

Damien from A Practical Guide to Sorcery. He managed to endear me through sheer earnestness and some of his endearing flaws and obsessions (like needing to make sure not a hair is out of place so his hair can look just like his brother's natural hair).

Catchwick from STORMWEAVER

Clive’s wife

Is Donut from DDC a non-MC? I love her.

Kim Young-hoon from RTOC

Kai and Nephis from Shadow Slave

I’m not great at favourites, but it might be Duke Long. Such a dumb name for such a badass character, and he is really goddamn cool.

Dross

A few honorable mentions:

Shortbus, from Ben’s Damn Adventure

Sylvi, from System Universe

Sift, from Divine Apostasy (Shade’s First Rule)

Sgt Cullen, from Infinite World

Cookie, from Full Murderhobo

Lord Third.............anyone here knows which novel im talking about?