Usually what character I choose to play is pretty heavily influenced by the looks and flavor of character. But in Demigod I can't really choose between them, I like them all, how they look and and how they play. Really need an option to choose a random demigod 
I like Queen of Thorns' chariot, like, she just can't be bothered with walking. It's just cool how she comes from the flower to stand above others and wreak havoc. But ye, the breasts are a bit comical, and the strategically placed vines irritating.
Oak's immortality is a nice theme. But mostly I just like how Oak reminds me of Vhailor, which is just win.
At first I thought Erebus was somewhat boring. But I really like his giant crossbow, and the wings are impressive. I think I've missed his background story, seems like he's more interesting character than I thought.
Playing Rook is a powertrip. It's not about how effective it actually is, but how Rook feels to play. It's massive, creeps just die around Rook. It really feels like playing a walking tower.
Torch Bearer's two forms are cool. But it's not the looks so much as TB's voice, especially playing fire TB is just hilarious. The background story is a bit old, but I like TB's flavor anyway.
Erebus with his bats, turning into mist and draining life is just so cliche it's fun. He has so small character ingame, though, that it doesn't really matter what he looks like. I like his syringe armor though.
Unclean Beast also looks a bit meh ingame. Though close up it's better, and background story is good.
Ok, Sedna is just boring. Like, these are demigods, the others feel like it, they have some claim of power. Sedna.. what? She's got a kitty and likes animals. I mean, she might be a nice character on some other game, but isn't that interesting in Demigod.
One thing Demigod lacks is a demigod I could play while listening to Manowar, or certain Bal-Sagoth's songs. It's hard to describe, but something over the top, some sort of reckless melee character probably. I dunno, it's just something I miss 