The first and most important thing to know about Wendy is that she is an introvert. Upon first meeting her, someone would likely describe her as "timid" as she tends to stutter and stay quiet. She might also be called "klutzy"--she tends to trip from time to time--or maybe even "lacking in confidence." However, she doesn't keep away from people; instead, Wendy is very friendly toward others and likes making friends. Additionally, her display of timidity and lack of confidence are most prominent when she is outside her comfort zone. Like many introverts, when Wendy's with the people she considers friends (or even friends of her friends), she becomes much more outgoing. Even if she's surrounded by people she doesn't know, so long as one of her friends is by her side, Wendy doesn't come off as timid or confidence-lacking in any way.

Another important trait of Wendy's is that she is very polite. She addresses everyone--most of her friends included--with "-san." She's also very considerate of others--for example, if she injures someone (unless they're the antagonist), she'll apologize and ask if they're all right rather than ignore the fact she injured them. Wendy tends to not argue with others either unless she absolutely feels that what they're saying or doing is wrong. Even if there is evidence from the past to support the other party's argument, she will still try and change their minds.

To complement Wendy's politeness is honesty. For one thing, she is very open about her feelings and thus isn't afraid to express them. No matter if she's happy, angry, or even frightened, she won't try to fake how she feels. Wendy's also not the sort of person who lies to others unless absolutely necessary, in which case she'll tell part of the truth but hide the more important details. Even then, she's seldom lied--the only notable time she did such was to protect a friend whom others portrayed as an antagonist, but she believed was good.

For her age, Wendy is rather intelligent. She can understand more mature situations rather well, and she is quick to catch on to what's happening around her. Every now and then, she will be the one to point out things before her friends even notice whatever she's pointing out. Wendy is also somewhat a fast learner--for example, she used her first offensive magic spell after being told she could use such, despite having grown up believing she could only use supportive magic.

When she was very young, Wendy dealt with abandonment not once, but twice. First, her foster mother abandoned her without warning (it should also be noted that Wendy roughly five years old at the time). Not too long after that, her travel buddy left her with a guild without saying a word to her. Based on these experiences, one would think Wendy has trust issues. In reality, Wendy trusts people very easily, which has sometimes proven to be detrimental for her or her friends. For instance, she revived Jellal on behalf of the antagonist, whom she would've otherwise not helped. Though this later proved to be beneficial, Wendy, having already had trouble deciding whether to revive Jellal or not, blamed herself for reviving him and almost changed allegiance under Nirvana's influence.

To Wendy, friends are very important to her. Without them, she would not have built up as much confidence as she had in such a short time, nor would she also have realized her potential. In addition, if her friends hadn't been there to support her during some situations she was in (such as her foster mother leaving her), Wendy would've likely been very depressed and would take longer to recover from such situations. Likewise, Wendy will always support her friends, even if she puts her life on the line. If she can't support them, or if she believes she did something wrong, she will get very upset and put herself down.

Wendy has been shown to be rather stubborn in battle (especially if she is doing such for her friends) and, to a lesser extent, when she is trying to help. In battle, she has great endurance (a trait common amongst Dragon Slayers) and will not easily yield, even if she has taken a lot of damage. Even if it seems like she has no chance of winning the battle, she will still continue to fight until she wins, if it becomes impossible for her to fight, or if something happens that causes the fight to come to a halt. It's a similar case for helping--even if the other party continues to refuse her help or doesn't believe they need it, she won't stop until she's able to get through to them or if something happens that renders her unable to help.

Battle-wise, Wendy's best at using support magic, which ranges from healing wounds and motion sickness to increasing her or her allies' offense, defense, speed, or a combination of them. Offensively, Wendy's not as strong as the other Dragon Slayers (Natsu, Gajeel, Laxus, or Cobra), but because she's much younger than them, she still has potential. That said, Wendy prefers not to fight and for the most part will stay on the sidelines and assist with her supportive magic whenever necessary. However, Wendy will join the front lines if her allies need assistance, or will even fight alone if necessary. In both cases, she will give it her all.

Dragon Slayer General Abilities
-Wendy can eat her own element to restore her energy and enhance her abilities. In Wendy's case, she eats air. Breathing doesn't count--rather, when doing so, one may notice the oxygen around them growing thinner. She also has trouble restoring her energy when eating air in polluted areas.

-She has heightened senses, particularly in smell, sight, and hearing.

Wendy's Skills and Abilities
General:
-She can sense air currents and predict the weather.

-Wendy is pretty durable. She can take plenty of hits and still be able to stand and counterattack.

-To go with her durability is good physical stamina. She can use quite a few spells consecutively and still have enough energy to continue fighting.

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Offensive:
-Sky Dragon's Roar - Wendy breathes a tornado-like blast at her opponent; it has enough power to destroy a Lacrima crystal.

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Supportive:
-Sky Dragon's Healing Spell - Wendy uses clean air to heal people, from draining poison from someone who was infected to even reviving people in a near-death state (however, she cannot use it to revive the dead). That said, Wendy cannot use her healing magic on herself (she can, however, cast her other supportive spells on herself).

-Troia - Cures motion sickness; the effect runs out after a while. If used too often on somebody, that person will develop an immunity to it and thus Troia will no longer work on them.

-Arms - Increases the target's damage output for a short period of time.*

-Armor - Increases the target's defense for a short period of time.*

-Vernier - Increases the target's movement speed for a short period of time.*

-Raise - Cancels magic that affects Wendy's or others' bodies.

-Re-Raise - Protects Wendy from any anomaly effect magic targeted at her.

*These three spells can be combined with one another, and they still keep their effects. For example, Arms x Vernier increases targets' damage output and movement speed, and Arms x Armor x Vernier increases their damage output, defense, and movement speed.