Will the Magic Wand Weirdo.
Dan the Dweeb.
Reading all these nicknames that the two protagonists give out reminds me of the nicknames my brother and I come up with.
The Lancer: for a kid in Kendo who accidentally stabbed me in the stomach with his shinai.
Shackles: a neighbor's dog who is almost always chained up and locked up.
The Unshackled: what we call Shackles every time his owner lets him out.
...and a whole bunch of other nicknames that aren't exactly family-friendly ;)
I love having a brother and I like how the author manages to capture the whole love-hate relationship between siblings.