While I know that Sir Daniel is not a popular character for his overall uselessness against other characters. But for someone like me, I love Sir Daniel, in that his moves are good and supers are ok.
However, when it comes to competing against other characters he is sub-par. This needs to be fixed, his supers, most importantly. His level 1 is useless against those who know how to dodge, just like his level 2. (obviously they work if timed correctly) His level 3 is even worse, if the person leaves the aura for even a second it resets, and it's 100% less effective than others. More times than not, you'd have better luck with a screen wipe.
When it comes with tactics, he can be dangerous. His level one attack can get someone if in the right position. His level two is better if closer. His level three is effective if people can just keep up with the others.