I like his lighthearted attitude. ^^
He's a gentle soul who doesn't look at things all too seriously, very much unlike Scorpion who just seems to have an entire tree shoved up his butt. Yet when necessary, he can be serious and kick some skulls in, and he looks freaking cool while doing so. I love his gameplay, his weapons and moves, and his main outfit is really awesome. And even though he is kinda goofy, he still has a deep background story, he knows pain and suffering, but he doesn't carry it with him and lets it control his entire life... again, very much unlike Scorpion.
So out of the two ninjas in MK, Takeda is definately my favourite. ^^
Scorpion is still on the bottom of my list of favourite characters, so it was a pleasant surprise to see an apprentice of his became one of my top faves.