Deep Niobe is a B-rank DPS with a poison-oriented debuff profile that mixes single-target chip damage and short-term defense shredding. In real gameplay, he is mostly a collection unit, since B-rank characters are quickly outscaled by other options in both damage output and consistency. And Poison met anever existed.
His main tool is Deadly Scent, which reaches guaranteed poison application and provides decent single-target pressure while reducing enemy damage through poison stacks. His passive defense reduction on attacked targets can help allied damage briefly, but the one-turn duration and low personal scaling make the effect hard to convert into meaningful momentum. His basic skill contributes minimal damage and does not change his overall low-impact profile.
Overall, Niobe can function as a temporary beginner placeholder in very early progression if you need basic poison utility, but he has no long-term competitive value.
