On the left is my new oc, Errant Callithumpus. She is an earth pony adventurer who keeps dragging her friends on adventures. One such friend is Omega Fuse, a unicorn who makes and sells horse shoes, and is a bit more enthusiastic about these adventures than Errant’s other friends.
 
While Errant has slightly more muscle mass for her size she is still her size. She has to compensate my sneaking up on her enemies. Basically, she sucks at this. While yes she can sneak up on someone she thinks mostly in the short term, and often fails to take out her enemies in a silent manner. This has repeatedly led to her alerting everyone in the area of her location, and gotten herself into trouble many times.
 
She sucks at understanding social cues and is prone to insist that certain things happen without first regarding the opinions of those who are involved.
 
TL;DR: The one on the left is Errant Callithumpus, an impulsive adventurer, and the one one the right is Omega Fuse, her friend, and a shoe maker.