Fantomask writes...

In S01E24 Performance, I still don't get two things

1) Parasite was trapped into foam and had martians powers, why didn't he just phased through matter to free himself ?
2) Why did he had to wait Megan told him he was vulnerable to fire to be actually hurt by fire ?
3) Why invulnerability didn't protect him from the fire and the weakness took over the strength ?
4) How did Superboy recharge his powers faster than Superman ?

And actually that's 4 things but too lazy to correct the beginning of the post...