Which unit in the Dark Elf castle do you dislike the most based on its appearance?

Only the unupgraded ones deal 6 damage each.

I wonder, has anyone ever surrounded a Hydra with 6 stacks? Even the AI isn't capable of that. Regarding the topic, Hydras don't seem to fit well; maybe they should have been placed on level 7. Anyway, that level didn't turn out well for almost all factions.