Mac Kazoo

Mac is one of the two main protagonists (alongside Bloo) of Foster's Home for Imaginary Friends. He is Terrence’s younger brother who is an 8-year-old boy and the creator of Blooregard Q. "Bloo" Kazoo. His voice was high early in the series, but as the show went on, Mac’s voice noticeably became slightly deeper due to his voice actor aging.
==Personality==
Mac is a bright, selfless, smart, sensible, imaginative young boy who is not afraid to show his emotions, and the creator of Bloo. He created Bloo when he was three years old. Mac is unusually clever, and almost always knows what to do when there is a problem. 
He has a keen sense of reason and tends to be the one to settle any mishaps that the imaginary friends (particularly Bloo) end up causing. Mac is usually very good-natured, despite Bloo's continuing antics. No matter what happens to Bloo, or any other member of the house, Mac is usually the one to bail them out. 
However, he has been known to snap; Mac has a strong moral personality, and he always avoids doing wrong things but is sometimes pushed to do otherwise, almost always by Bloo. That said, he can be very rambunctious and childish when he wants to be, and generally has no problem pulling pranks or messing around with Bloo, as long as nobody gets hurt. Some episodes also have him being more naïve and childlike than usual, like "Adoptcalypse Now" or "Fools and Regulations".
==Mac's Condition==
Mac's personality goes from very sensible to a complete lunatic if he consumes even the smallest amount of sugar, which is the main reason why his mother won't let him have any. One example of this is in "Partying Is Such Sweet Soiree", in which one drop of heavily-sugared punch causes Mac to go completely crazy. He disrupted Bloo's wild party by eating sweets and embarked on a quest for more sugar, which included him streaking through town in the middle of the night naked. 
He also became "sugar high" in the episode "Affair Weather Friends", in which he got so mad at Bloo that he decided to eat an excessive amount of ice cream. In the Halloween special episode "Nightmare on Wilson Way", everyone, including Mac himself, was serious about keeping Mac tied to a bed in order to keep him from eating candy. Later, Bloo, thinking everyone except himself and Mac were turned into zombies, obtained some Halloween candy, and since Mac was trapped on a bed and couldn't move, he couldn't stop Bloo from putting the candy in his mouth and he ended up dashing through the house and eventually running in his underwear as he took candy from trick-or-treaters. He also has a sugar rush in "Race for Your Life Mac & Bloo", after drinking an energy drink, but only ends up running around crazy, and not becoming obsessed with finding more sugar. 
Despite his condition, Mac and Bloo are seen stopping for ice cream on their way to bring Duchess back to Foster's in "Duchess of Wails". Mac is also seen drinking root beer at the end of "Schlock Star", eating candy in "Squeeze the Day" and "I Only Have Surprise for You" and cookies in "World Wide Wabbit", "The Bloo Superdude and the Magic Potato of Power" and is about to eat cookies in "Go Goo Go." Even though he ate sugar-free cookies in the series finale "Goodbye to Bloo", it is never stated whether the cookies he was eating in "World Wide Wabbit", "The Bloo Superdude and the Magic Potato of Power" and the cookies he was about to eat in "Go Goo Go" were sugar-free. 
For the first time Mac's sugar addiction was shown, when Bloo attempted to calm him down using sugar-free gum, Mac exclaimed "IT BURNS US!", in a manner similar to the character of Gollum from The Hobbit and The Lord of the Rings.
Another thing to note about Mac's sugar addiction is that, in his crazed state, Mac experiences a significant increase in speed, strength, and combat skills. This is shown in "Partying Is Such Sweet Soiree" when he ran out of Foster's in mere seconds, and in "Nightmare on Wilson Way", when he rushed through everyone in the whole house, subdued Wilt and Coco in one punch, and smashed Eduardo through the front door, before lifting him above his head and tossing him away.
Out of all of Mac's known sugar rushes, he has eaten large amounts of sugar but has shown no signs of gaining weight or getting sick, likely due to his massively increased metabolism while undergoing one. 
Mac's sugar rush is his and Bloo's synergy attack in Cartoon Network: Punch Time Explosion XL. When they grab an assist pickup and summon their synergy partner, Peppermint Larry from The Marvelous Misadventures of Flapjack, he appears with a barrel full of candy. Mac dives in and eats a large amount in seconds. After becoming hyperactive from eating sugar, Mac zips around the stage sending any opponents in his path flying, with Bloo clinging to his back.
His condition is also mentioned in "I Only Have Surprise for You", "Destination Imagination", and "Goodbye to Bloo".
== Gallery ==
File:Mac Red Shirt.png
==Trivia==
*In Mac's early design, he was going to be bald.
*Mac's run cycle changed in Season 4 and changed back to the original in "Destination Imagination".
*Mac's voice actor is Sean Marquette in the series, but in Cartoon Network: Punch Time Explosion and the updated XL version, he is voiced by Grey DeLisle (who, coincidentally, voiced Frankie), making him sound the way he sounded in Season 1. He and Bloo are one of the few pair fighters (and the only playable characters from Foster's) in the game.
*Only Mac's mom is shown in the series. His dad is never seen or mentioned. Since Mac and Terrence's dad isn't normally around, Mac's mom appears to be raising him and his brother Terrence as a single parent.
*As shown in "The Sweet Stench of Success", Mac knows morse code. This was also shown in "Read 'Em and Weep".
*Mac appears in every episode except "Pranks for Nothing", and is absent in 7 shorts: "All Zapped Up", "Bad to the Phone", "Give Pizza a Chance", "Fistful of Cereal", "Drawing Bored", "Coconuts", and "Birthday Cake Bloos".
*Mac's golden trading card statistics in the Foster's Home for Imaginary Friends Leapster game include:
**He Is GREAT at paddle-ball.
**Has never eaten at Foster's Frijoles (beans).
**He is 4 feet, 3 inches tall.
**He created Bloo after he had to give away his favorite blanket.
*Assuming Bloo has the same last name as Mac (His full name being Blooregard Q. Kazoo), it is possible that Mac's last name is also "Kazoo."
*Series creator Craig McCracken said in an interview that Mac was based on his childhood at the age of seven following his father's passing.
*Mac's condition with sugar is similar to Marie when she eats triple sugar
*Headcanon: He get adopted by Moxxie and Millie 
**his headcanon siblings are: Pacifica Northwest, Helga Pataki, Kid Cosmic, Butters Stotch and Fanboy
***he don’t longer has a precocious crush on Frankie, and he may would be shipped with Maxine who has things in common.