[Keith isn't trying to be condescending, he's not Sokka, okay. But from where he's standing all he sees is a youth who appears to be completely unarmed facing down a jelly cube. So he's got his bayard as a sword out and at the ready and is running to attack when -
Did she just summon water??
... You know what that's not even the weirdest thing to happen today. He still makes his attack from behind - from whatever serves as 'behind' for the jelly cube seeing as it didn't seem to notice Keith's approach but was focused entirely on Katara, slicing it down the middle but avoid cutting it clean in half because the last thing they need is more jelly cubes. This way it'll have to take time to reform itself.
Aaand that's when he sees the person passed out behind Katara. Okay, why she wasn't running makes total sense now.]
FEAR
Did she just summon water??
... You know what that's not even the weirdest thing to happen today. He still makes his attack from behind - from whatever serves as 'behind' for the jelly cube seeing as it didn't seem to notice Keith's approach but was focused entirely on Katara, slicing it down the middle but avoid cutting it clean in half because the last thing they need is more jelly cubes. This way it'll have to take time to reform itself.
Aaand that's when he sees the person passed out behind Katara. Okay, why she wasn't running makes total sense now.]
They alive?