When writing a novel, how can a character be developed well, but QUICKLY?

“None of those either. Look upon the wasteland that is my sex life, and see that it is barren. Naught but a moggie followed me home.”

They both burst out laughing. “I’m right, though,” Claire went on.

“Why is that always your first suggestion? I do not need some tea. It’s three o’clock in the morning! If I have tea, I’ll never get to sleep.”

When was the first time you suck on a penis?

“Exactly.”

Do that and you can ground your characters quite quickly.

“I’m glad my sex life is so entertaining.”

Apollo astronauts discovered the moon is covered in tiny orange glass beads. Now we finally know why. - Live Science

“Exactly.”

“About wearing more clothes? How am I supposed to catch any fish if I don’t show off the bait?”

“Damn straight. So get to it! This time next week, I want to hear some moans coming through that wall.”

What are some ten strong legal evidences that are needed for a divorce?

“I don’t know. Partying. Going to a pub. Anything besides sitting on the couch reading…” She squinted. “What the hell are you reading?”

“Well, maybe if you didn’t spend all day reading—” May prodded the book with its garishly-coloured cover with her foot. “Bizarre comic book porn…”

Here’s how we presented the character Claire when she was introduced, which the agent particularly singled out:

What is the logic behind the porn being legal but not prostitution? Isn't it the same thing in essence?

“You know what? Never mind,” May said. “I am way, way too drunk to be having this conversation.”

“I know! That’s why I’m putting them under you!”

“I’m serious!” Claire said. “It’s staring straight at me.” She let the curtain fall. “Weird.”

Can you share any "backstage pass" experiences you have had at concerts?

“Cute girls?”

“Perv.”

“No way.”

Why are so many US conservatives in this day and age still against racial mixing? They won't say it in public, but they are still against the mixing between Blacks and whites? Why?

The agent had only one bad thing to say (the synopsis was crap; writing synopses is hard!), but praised the characterization and particularly how well we introduced a character’s personality quickly.

Essentially, what you do is show the character:

“Hang on, are they playing ping-pong?”

Why do Democrats look like snowflakes and Republicans look like Vikings?

May yelped. “Hey! Your feet are cold!”

“May! You’re home late! Early, I mean. Well, I mean, it’s early in the morning, but you’re home before I expected. Er, after. Before?”

Claire, one of May’s three flatmates, former university roommate, and best friend in all the world, shrugged expansively. “It’s a Saturday night. What else would I be doing?”

What are mean nicknames to call my sister? She is always so mean to me.

“I’m just a fan of your catch and release program.”

“It’s a cat. All cats are weird.” May sipped from her mug, inhaling the warmth. She closed her eyes. The room spun. She opened them again. “Ugh. I think I drank too much.”

“Claire, I—”

What is the rudest/meanest thing a family member has said to you?

“I’ll put the kettle on.”

“Tart!”

“I try not to, but thank you for reminding me. I know I don’t need a cat. I don’t want a cat. What would I do with a cat?”

What is your twin flame story?

Claire sat back down, legs tucked elegantly beneath her. “You are looking a bit sloppy,” she said, inspecting May through narrowed eyes.

Create a context between this character and other characters.

“No, about the cat. You don’t need a cat. You remember what happened to your spider plant, right?”

What are the signs of covert narcissistic abuse that most people miss?

“Nary a cute boy in sight.”

“You don’t need a cat. You can’t take care of a cat. You can’t take care of a ficus.” Claire flopped on the other side of the sofa and wriggled her feet beneath May.

“Thanks. You’re looking pretty ratty yourself. Have you been in that bathrobe all day?”

Do you think cheating is that bad?

“From the look of you, if you try to sleep now, you’ll spend the next three hours hanging onto your bed trying to stop the world spinning. Since you’re not going to sleep anyway, you might as well keep me company.”

“But they’re cold!”

In the kitchen, Claire set out a battered pair of mugs: May’s black, with “PEBKAC: Problem Exists Between Keyboard and Chair” in white letters; Claire’s white, with “This must be Thursday. I never could get the hang of Thursdays” in dark blue. She carried both mugs into the living room. “A moggie followed you home? Is this some weird Internet slang I’m not current on?”

This is a real question: Why do a lot of men/boys hate (yes, hate) women that voice their criteria in choosing a partner? Even when the criteria is sane and responsible. Besides it being, sadly, an effective mating strategy, why does it exist?

“Well, maybe if you’d wear more clothes, they wouldn’t feel so cold. Hussy!”

“I need to do laundry.”

“It’s not looking at you.”

How do I get my body in shape?

Engaging in conversation that also shows something about their intelligence, personality, wit (or lack thereof); and

“Number one, it’s not porn, it’s ecchi, and number two, why would I waste a perfectly good Saturday doing anything else?” Claire pulled at her tea and sighed. “The only thing that could make this day better is if you'd come home with some cute boy, so that after you kicked him out tomorrow I could live vicariously through you.”

May studied the black and white comic panels. “Oh, my. She looks…anatomically implausible. What is she doing to that poor man? Wait, are those cat ears?”

Is it necessary for people to wear towels while showering at gyms? If so, what are some ways to prevent the towel from slipping off and exposing oneself?

“Claire! Why are you still up?”

“You need some tea!”

“They are! He broke the rules of the boarding house by petting this character while she was in cat form, so they invoke the ancient rules of single combat via ping-pong, and—”

“Fine.” May collapsed into the warm spot Claire had just vacated.

Doing something they enjoy, that expresses their personality, and that is in some way unusual or noteworthy;

After Eunice and I finished London Under Veil, I entered the first chapter in a contest at a convention where you could submit something and have it critiqued by a professional book agent.

“Yes way. It’s washing itself under the street light. Uh-oh, I think it spotted me. It knows I’m watching it. I swear it’s looking at me.”

May pushed Claire’s feet away. Claire rose to peer out the window. “Huh. It’s still there.”

“So you didn’t meet any cute boys at the club tonight?” Claire called as she bustled about the small kitchen.

“Yep!” Claire chirped. “There’s this schoolboy, see, and he’s homeless, so he lives in this boarding house that used to be a hot springs bathhouse, which is cheap because it’s haunted, so he decides—”

“Nope, I mean a cat followed me home. A black cat, to be exact. All the way from the club. Probably still out there, for all I know.”

“Yuuna and the Haunted Hot Springs!” Claire turned the book around.