[@Pie Flavor]
Read it over, I like everything. PM me his real history (since you know, I play the principle) and change the ability "Code and Manipulate"

Constant having to code something is kinda tedious, what it should be is a program he can run to buff the Lyoko warriors but since it's something not native to Lyoko, the system rejects it after a bit making them temporary, and just because Lyoko rejects it doesn't mean the warrior using it would get hurt.

Just merge the shield from error into the Code and Manipulate.

A sad part of being the group's Jeremy is acknowledging the fact you'll most likely never see Lyoko in person, due to being the only one who can really use the computer. It's a complex machine and needs someone extremely talented and rare to use it and you happen to be that guy. You still get to have fun, with those constructs though, which is good because you could just make an avatar with basic attacks to fight in Lyoko as.

Make those edits, or suggest a compromise and we can discuss how to change your character the way you want because it is YOUR character and not mine and he's in!