Adam | Adam Smith | Adam and Eve | Adam Mickiewicz | Adam Sandler | Adam Lambert | Adam-12 | Adam Ant | Adam Faith | Adam Again | Adam Michnik | Robert Adam | Adam Sedgwick | Adam Savage | Adam (Bible) | Adam West | Adam of Bremen | Adam Warlock | Adam Strange | Adam Hochschild | Adam Rapp | Adam Hughes | Adam Carolla | Adam Baldwin | Hans-Adam II, Prince of Liechtenstein | Adam Hart-Davis | Adam Buxton | Adam Brand | Adam Yauch | Adam McKay |
Of the three major crossover characters between the O'Keefe family and Austin family series of books (the others being Canon Tallis and Adam Eddington), Zach is the only one who first appeared in the Austin books.