Winslow Schott was an owner of a toy company Schott Toys. Lex Luthor's company Lex Corp bought out his company as a subsidiary. Winslow wants revenege on Lex for ultimately dropping his company for using his money to buy illegal weapons.  Winslow becomes Toyman, as he takes revenge by creating robotic toys that cause explosive destruction. He is becomes a terrorist. 

Toyman is intelligent but also slightly insane, weird, annoying and insecure. His voice can sound high pitch, or normal male pitch, as long as it sounds like a insane/obsessed grown man, maybe a little bit creepy.