Aurora Apfelbaum

Appearance
Aurora Apfelbaum has bright pink hair and golden eyes. She is a fox faunus, and proudly displays her fox ears since it would be too much of a bother to hide them.

Aurora wears a black cape trimmed with cyan, magenta, and violet. The front of the cape comes together like a sailor collar and is fastened with a gold clasp in the shape of her symbol.

Empathetic Resonance
Aurora's semblance is, simply put, control of other's emotions. There are six emotions she is able to inject into others: Joy and Sadness, Calmness and Anger, Love and Fear. Aurora is only able to inject an emotion, not control how said emotion will affect her victim. The actual effect of Empathetic Resonance is determined by a lot of outside factors, such as her victim's personality and environmental factors. It is best if Aurora gets to know her enemy somehow before battle in order to prevent her semblance from backfiring.

For example, if Aurora were to go up against team RWBY, she wouldn't want to inject Anger into Ruby since it would probably result in some sort of righteous wrath and end up powering her up. However, if Aurora were to use Anger on Weiss, the result would most likely cause Weiss to get frustrated with her teammates and distract her from battle.

Emotional Control
In order for emotion injection to work, Aurora has to first feel said emotion herself. She can't use Anger if she is Calm, Joy if she is Sad, Love if she is Afraid, or anything if she feels nothing. This is difficult for her since she has trouble controlling her own emotions, and her depression is a serious barrier against feeling anything at all. If Aurora is surrounded by friends, she is more likely to have control over her emotions and thus more likely able to use her semblance.

Aura Conductivity
Empathetic Resonance is aura conductive, meaning Aurora's aura must be in contact with her victim's aura in order to inject an emotion. This also means that if the victim is in contact with someone else's aura, the semblance will affect them as well, although slightly weaker unless her victim is aware of Aurora's semblance and willing to add their own emotional energy to strengthen the chain. This can turn group hugs into a sort of team power up.

Effects on Grimm
Grimm do not have auras, so they cannot be directly affected by Aurora's semblance. However, using Aura Conductivity she can create a sort of barrier that could cause Grimm to lose interest or even flee if the positive emotions generated are strong enough (and if the Grimm isn't extremely powerful). In theory Aurora could also use her semblance to attract Grimm, but there is no reason for her to want to do that.

Trivia

 * Aurora mainly comes from the Aurora Borealis, and is also a play on the word Aurum, which means gold in Latin. Apfelbaum means apple tree in German, and sounds a lot like "apple bomb", like Aurora's homemade apple-based hand grenades.