Bri is a good nickname for Briana. I have a friend named Briana and she loves being called Bri. Plus, it's easy to say because it is only one syllable. If you don't like Bri, you could use Ana as your nickname. That's a really pretty name.
Adri
the goddess
adriana is really just a latin name. and there is really not a know a known reason for why adrianas are smart. if your named adriana, and your smart, good you just put the "adriana`s" in a good name. but i know a good friend named adriana escobar who is really smart. so yeah.shes my best friend and whatever. so yeah. like shes really cool and smart and awesome and pretty <3 :D
If you like 'Nan' as a nickname, then yes, it is a good nickname.
A good nickname for what? Sounds a bit pansy
Chris or CJ could be good nicknames for Christian.
It does not require a nickname.
A good nickname for Zekrom would be "Black Dragon".
Jaz might be a good nickname
"Adriana" in English is Adriana in Italian.
A good nickname for someone named Christian could be "Chris" or "Cris" for short.
Kenster, Ken, Kenny...
Lee is a good nickname because it is part of Emi ly (Lee).