[@The_written_john]
I'll give you some input on your semblance before I go to sleep.

Your character's essentially a heavy damage dealer but is quite slow in doing so. He can't dish out much, but if he hits you with it, it hurts. That means that if you want a more offensive type semblance, heavy AoE oneshot attacks suit your character better, I'd say. Something like a big laser beam, or a power blast of sorts. Something big and flashy, that does a bunch of damage.

On the other hand, your personality indicates that he dislikes being pushed around, and he likes protecting/serving people. In that case, it might be good for your semblance to instead buff your defensive prowess without lowering his mobility so that he can protect himself and his allies better. It ties in with his personality as one who likes to help people, you see.

As an alternative route, you could have both as part of a duality sort of thing. You could maybe have the shield first, which takes energy from attacks when it gets hit that you can store up and release into a really strong laser blast. I sorta feel like this is the best option considering that you seem to want to have a little of everything. I also noticed that team DEVL don't have many defensive options, so yeah.

Those are my suggestions, anyway. Feel free to use them as you wish.

Oh, and I'll see to crunching personality compatibility theories in the morning. I gotta go to sleep sooner or later.