secretly a mutant duck who mutated to 6 feet and learned English and is now an extremely literate giant duck -overdue

Hides chocolate bars under his beanie -Griffin (you ain't wrong) 

A giant duck possesed by the spirit of the oracle (that's why they have green eyes) wearing a beanie to hide the fact that they're actually Tsukkishima in disguise who won an Oscar but didn't want people knowing so they disguised the award as a saxophone. - pauch

My dad - someone  

very tall ™ duck (BFG) with croc slides that should stOP TAGGING ME IN CARS FANFICTION -greg (OH YEAH THE BFG -Nothing)

Quack is secretly psyduck (more like chillduck, ps. i know it's a pokemon reference) (lmso kinda suits him-Coco) (Quack is chillduck uwu)

the Dad of the Group - William

Has been dissected (sowwie Quack-) by wizards in order to find considerable content for muggle studies ( *coughs* The rubber duck theory went too far..)  - Coco (I- wtf Coco- ~Nothing) (w h a t -Quack) (COCO I SWEAR- overdue) ( uh well hehe blame my BRAIN not me *scratches head* Quack sowwie-)

A duck that wants to play the saxophone, was originally the sidekick in "the princess and the frog" instead of the alligator but got cut at the last minute - Griffin (GRIFFIN IM CRYING- -Quack)

*Sees a duck* Bark woof woof grrrrrr!!! -totally not one of your children, wolf