Not neccessarily, he could concivevly synthesise heavy metals from the things he has eaten. Doesn't have to be organic
It's a small dart of about two inches made out of compressed biomass but with a nasty surprise for everyone that it's used against; once it strikes it deploys a large number of segments that function somewhere between the shrapnel of a frag grenade and a really, really rapid fast growth of tree branches/roots, shredding the part of the body that was hit in the fraction of a hundredth of a second. Because of the forces it's subjected to the dart disintegrates in its entirety during this phase... which is why Alex doesn't use it against humans or demons. Vampires don't leave any incriminating evidence behind once they've been 'terminated'. In short, these things rip apart the area struck in a fraction of a second if it hits. This thing cripples, mutilates or kills without any chance to react for the victim. It makes handgun bullets look impotent in comparison. If you think this is implausible, this little bugger is at least as fast when it captures prey.
That or late season 7 or "season 8" craziness. As of season 7 , Buffy is an utterly broken character and the "season 8" comics are just loony bin stupid.
End of season 7 at the crater: Alex just stands there, kicks a pebble into it and shrugs dismissively before walking off, commenting in deadpan "Nice job, Spike."
...I ought to stop adding new parts to older posts, shouldn't I? *sigh* Ah well. Updates and all that.
Yay, updates. I don't remember - what is this Alex's stance on consuming relatively innocent people for valuable information? Because eating that kid will give him telepathy, minor reality warping and will save the town. Also, who is going off to fight, I wonder.
*snaps fingers* Ah drat, I knew I forgot something. Consider that what they trying to tell him/were shouting after him when he left the school? Alex running into Vampire Buffy should throw him for a loop for a bit, though given that he's told about the nightmares thing he knows what he can expect and he won't flip out too much. Alex isn't the kind of total bastard who'd resort to eat a teenage kid that doesn't even realize the problems he's unwittingly causing Oh who am I kidding? He's the exact type of asshole who'd steal candy from babies if he thought he'd get away with it and he felt like eating it without having to spend money on it... and then when the kid's mother complains to him about it eat her too. ...Or something like that. *shrug* But even though Buffy is technically unable to stop him, he's already 'off' humans... Billy should be safe. And this gives several very good ideas for future scenes. Thanks again, Yog.
Does he even need to actually consume the kid to gain the abilities or could he do something like consume some of his blood to do so?
http://en.wikipedia.org/wiki/Portia_spider Yeah infected versions of these being used by Alex as spies.
It'd probably be much more efficient to replace it with Tetrodotoxin (TTX) or something similar. Cone snail envenomations are as deadly as they are because they are a mixture of a host of different smaller conopeptides that each have a specific job, the synthesis of which are highly complex and probably not worth the effort of teaching another organisms venom glands to synthesize all of them.
Given that Billy's abilities are partially based on astral projection and dream manipulation and the kid is comatose... well, I doubt that consuming Billy would grant Alex his powers for one simple reason that's already expressed in detail: Alex doesn't sleep, and is unlikely to fall into a coma because of his regenerative capabilities. He's shrugged off being shot point blank in the head with little problems. Blunt force trauma wouldn't even compare.
Buffy as a vampire. It's one of the things she has nightmares about. Billy manifests the stuff of nightmares because he's become some kind of dream manipulator/astral projector. [SPOILER]She's going to get better when he does as well, though.[/SPOILER] The kid's currently in a coma - he dreams practically 24/7. Those tarantulas of a few snippets ago was another thing he unwittingly caused... and if I'm right Xander is currently running away from a Pennywise wannabe.
Ahh, that explains that. I don't really get enough vitamin D myself^^ Not counting spain, fuck spain and fuck the sun!!!!