Katie Wood

(Not to be confused with the canon Katie.)Katie is Dr.Doofenshmirtz's secondary assitant.She trys to help him, but her love of animals get's in the way all the time

Appearance
When she first came to help Dr.Doofenshmirtz, she wore fake ears to match her pet,Sushi. (A Japanese cat-frog with wings that goes through Twilight the Wolf's favorite fandoms.)Dr.D tells her to never wear them again, and she listens. She wears a light and dark green sweatshirt to match Sushi still, blue jeans, and green sneakers.Her hair is brown and her eyes are hazel.

Personality
Katie has a "annoying" love of animals, and often hugs a O.W.C.A agent, lying to Dr.D saying it was a Kung-Fu attack. Also, she is quite jumpy.She acts young for her age, shouting and crying if she is upset

Dr.Doofenshmirtz
Katie looks up to Dr.D, even though he thretens her favorite thing, animals. She somehow dislikes him to a point, saying herself "Stupid nature hater!" and hissing at him quite often.

Isabella Garcia-Shapiro
In the few times that Katie didn't help Dr.D, she was always following Isabella to Phineas and Ferb's house. She often gets confused when she hears Isabella call her name, only to realize that she is a different Katie. For this reason, she tells Isabella to tell everyone to call her Kate instead.

Sushi the Flying Cat-frog
Katie absolutley adores Sushi, mostly because she is a combination of her 2 favorite animals, a cat and a frog, with wings. She trys to resemble Sushi often, even wearing plastic ears that match Sushi's.