'Kind of weird' is this Chara's MO. It's okay, they've been called worse.

You'll excuse them if the amount of teeth in that grin doesn't reassure.

At the word go they dart forward, and then slow down. They're not the most athletic child in the world, but it's clear they're somewhat deliberately letting the others go ahead, checking their speed whenever they start to pull up and speeding up whenever they fall behind - they don't want to make it seem obvious, because people dislike that too.

This is how you make friends, right? Or at least, fail to make enemies.