Author Avatar: In an interview, the creator stated that Matt is a character based off himself, but doesn't directly represent him. Furthermore, he went on to say that he would love to get rid of him, except he had placed him in too many projects to do so.
Pirate: Actually averted; he's a warrior who just dresses as a pirate. You can change his clothing in the third game, too.
Ascended Extra: According to the art gallery in the first game, Natalie first appeared as the White Mage in Attack of the Black Mages 5 (Matt's first flash using his current art style) and stuck around because he didn't feel like drawing more characters.
Friend to All Living Things: Hilariously subverted and inverted in the third game. She clearly likes and respects animals and nature, but she attacks them with her teammates nonetheless and quickly makes exceptions to "gross" animals she doesn't like, such as slimes and bees.
Plucky Girl: She's the only one who doesn't try to run away from Akron when the party finally comes face to face with him, effectively shaming Matt and Lance into fighting in the process. A game later, she's the only one who never considers running away and hiding in a cave instead of confronting Godcat.
To clarify, the partial destruction of the world due to events in the first game left everyone in chaos. Lance wanted to bring peace and order by basically eliminating all traces of a previous world government, taking over, and getting rid of any possible competition or obstacles via force if necessary. He is extremely extremist, but ultimately well-intentioned. The fact that he was so Easily Forgiven may have been a bit of a parody of Defeat Means Friendship. It certainly seemed like one.
This is symbolized by the fact that the Swastika on his arm is actually inverted, turning it into an oriental good-luck symbol.
Archer Archetype: Wields a bow that can be used to fire off lightning, fire, water, and ice arrows.
Cute Clumsy Girl: She seems to be this, considering that her victory animation has her saying "Oops!" and "Sorry!"
Early-Bird Cameo: She actually appeared in the first game, as evidenced by the hair. You're not likely to realize unless you play Bullet Heaven, see her portrait, then go back and play the first EBF, though.
Satan: He was created by Godcat, and in terms of power among villains, he is second only to her. He also apparently started out good, but was twisted into his form in 3, perhaps by Godcat to ensure her plans go along.
Gameplay and Story Integration: If it wasn't made apparent that the party has no hope in hell of actually killing Godcat, let's look at a snippet of her scan values for Normal difficulty: both her Creator and Destructor forms have well over 570k HP when fought separately, and total a little over 760k HP total when fought together, meaning you have to do over 1.33 million HP worth of damage in all to beat her. An incredible feat in and of itself. But remember: this is for their alternate forms. The HP of a single Godcat aspect in its light form? 5.3 MILLION. Again, this is for one aspect of Godcat (they both have the same HP), and again, this is on Normal. Yeah, killing her off for good is not happening.
Gone Horribly Right:Humanity as a whole. They were made to be an opposing force for her cats to compete against and subsequently conquer, developing the necessary traits of strength, wisdom and courage to run their own world. Godcat was less than pleased when humanity rose to power instead.
Marathon Boss: Ohhhhhhhh yeah. The final battle with her consists of no less than four forms and SIX phases. During the sixth phase you even have to fight BOTH of their larger forms AT THE SAME TIME.
Omnicidal Maniac: After learning of the cats becoming allies of man, she decided to kill off all her cat creations...or at least try to. The ones that managed to survive had their arms and legs taken. (Or so the legend goes) Her main goal after being revived is to destroy humanity.
Her boss banter reveals that she created humanity as a slave race to serve her chosen creations, the cats. According to Godcat, cats eventually became dependent on their human slaves, and humanity grew stronger than catkind; she destroyed cat civilization and took their limbs because she was "disappointed" in her children. After being summoned at the end of the game she plans on destroying humanity, believing them to be a mistake.
We Will Meet Again: Subverted since the heroes are far from being capable of killing her. She lets them go, being impressed by their tenacity and realizing that she has not been a good mother to her cats.
Yin-Yang Bomb: Has both a light and dark form, both capable of existing in the same place at the same time.