How would you describe an extremely ordinary character?

[Someone]

Ordinary to an almost cliche degree, the most average of the average...
That's the kind of character I want to write. Well, for now.
On the inside, she's going to be a delusional girl who thinks that she has been rebirthed from another dimension and was given another chance to save the world. She regards other people as her servants, and she thinks that she's above everyone else because she has a "legendary power". She even makes up her own battle moves and names.

But that's only on the inside.
I want an extremely ordinary character.
Can you please give a description of their personality?
Or just list some adjectives you think describes a boring person for all I care.

I'm basing this character off of Rikka Takanashi from the anime "Chuunibyou Demo Koi ga Shitai!"

[Jax]

Well, maybe you should have her not do much at all, she has to have time to be delusional right?
Wake up, put on one of five outfits, have her hair natural, no makeup, etc.. Go to school, B student, when she gets home, she sits at the window, "looking outside," but in her own dimension.

Maybe? Hope this helps.

[Priya]

Brown hair, grey eyes, average looks, average height (around 5' 11", say). You could have her be a little bit obese, so that's even more "normal".

[sandra]

I think an average cliche' character would kind of depend on her social surroundings. What do others expect of people in her area? What makes the special ones stand out? Identify what is special from her point of view.

For example: If you want the classical cliche' of the kid no one sees, then lets assume she is attending a school in a small town in America and she walks past the football field in a t-shirt and jeans, probably both a bit large for her to help hide a body she is probably not comfortable with (And girls don't have to be overweight to be uncomfortable with their appearance). She can watch the cheerleaders out on the field and see one of them look at her. Make it clear the cheerleader sees her as ordinary, but in her own mind she can charge onto the field and perform the move the cheerleader just failed - only better and with her own special additions that make it better than any of the other moves. Then she is startled out of her mental heroic saving of the big game's halftime show where she was made prom queen when one of the cheerleaders bumps her as they exit the field in reality and the cheerleader makes a comment about not having seen her there.

The cliche "average" are the quiet ones that stay on the sidelines and watch. The ones no one sees. For a school age girl they are usually shown as hiding behind a handful of books clutched to their sweater. They wear glasses and have bangs to help give their hair, that they see as being as plain as them, some character.

Go to a park or the mall and sit for a little while and people watch. You will see a lot of people that stand out, but you want to notice the ones that move through the stores or across the park as though they were just shadows of the other people there. Look for the ones that seem so unnoticeable you have to look for them. They probably are not the ones throwing frisbees or chatting with a clique of friends, they are the ones that watch the ones that play frisbee and hang out with a group. The outsiders by station, not choice. They're harder to see than you would think.

Example 2: Let's say that what makes her average is not that no one sees her, but that everyone sees her. She is the head of the cheerleading squad, spends her time going places with her friends. She has a two-door economical car that her parents got for her and loves to go to the movies or hang out at the mall looking for the newest fashions. She has a cell phone and spends most of the day texting her friends, even the ones that are standing beside her. And yet, she needs more attention than the mass of people on all her social media sites, so she has a tendency to see herself as something more. As the cheerleader that not only saves the halftime show and gets crowned prom queen, but stops the alien invaders and scores the winning goal while she's doing it.

Average and ordinary is what everyone around the character is doing that the character can do too. Whatever the other characters in your story are like is what your heroine should be like and be doing. The special is what you have her imagining the world is like. As long as she fits into the group she spends time with in the real world, she will be ordinary. It is what she imagines that puts her above the people in her group that makes her extraordinary.