The 1990 Mattel Simpsons is a line of action figures, which where available in 1990 and was released by Mattel.
Also Mattel did a mail away Bart Simpson figure in March 1991 also, The figure was the same figure as the original Mattel Bart Simpson but the t-shirt was white and had a print on it that says: Save Blinky with a picture of the three eyed fish below it, the shorts on it are green and the shoes are white & green. The figure is known as the most rare Simpsons figure ever with only a few known to exist.
At the same time, A British company named "Arco" which is owned by "Mattel" also made The Simpsons 'Rev n Go' racers which you pulled back & they drove, The were available as Homer Simpson, 2X Bart Simpson & Maggie Simpson. Also "Arco" made in 1990 also, The Simpsons wind up figures of Maggie Simpson, Bart Simpson, Homer Simpson and a different colored Bart Simpson.