Parasite

Like a leech or similar creature,

They worm and squirm the same.

Tainting everything they touch,

Only bringing pain.

...

Breaking down hosts' sense of being,

As facades they walk.

Their eyes glow gold with natural cruelty,

With booming voice they talk.

...

They purge worlds of innocence,

Tormenting their hosts' minds.

Forcing them to watch the carnage,

Slaughter of their own kind.

...

They crush hope within, without,

And even if the hosts goes free,

They're often just a broken being,

A shell of what they used to be.

...

These are the ways of goa'uld kind,

Enemies, not friends.

But perhaps one golden day,

Their tyranny shall end.