The Red Skull Snake is very tough and is one of the worst enemies in the early game due to its projectile attacks, which are released in threes, fly very fast, have a long range, and deal a considerable amount of damage. On the other hand, they do not appear frequently and do not appear in large groups. However, they drop useful items, so it's recommended to deal with them when a decent level is achieved. Slowing them down with the Magician's Ice 1 will greatly help, and melee and ranged characters can defeat it much easier. Outranging it also works, but it is somewhat difficult to do without a Sniper's Triple Shot 1, since the range difference is short without STR (or MAG with Priests) invested first.