Strykewyrm

Strykewyrms are a race of wyrms released on 8 February 2010. With the exception of the WildyWyrm, strykewyrms may only be killed by players who have them assigned as a slayer task. There are four types:

Strykewyrms is possibly a portmanteau of the words Strike and Worm, thus forming Strykewyrms which sounds like "strike-worm".
 * Jungle strykewyrm
 * Desert strykewyrm
 * Ice strykewyrm
 * WildyWyrm, a strykewyrm cousin released as seasonal content