>>12002848
A "boom" can last for months to years, and booms can peak at any point during their time.
The Turtles, whose large popularity lasted from the cartoon in 87 (which ran for 10 seasons) to after the first two films up until around 92 or even 93.
Mortal Kombat debuted in 92, MK2 in 93, the film and MK3 in 95.
Power Rangers debuted in 93 with the film in 95.
You can argue that once a cartoon, tv show or video game receives a Hollywood film adaption, that could be regarded as the peak of that boom in terms of mainstream attention. And remember culture moved a little slower in the pre-internet days and things could remain in peoples attention a little longer as well.
The Turtles, MMPR and MK were around for a long time but the actual boom periods could be seen as;
>Turtles boom
87 - 92
>MK boom
92 - 95
>MMPR boom
93 - 95
There's a definite crossover with the Power Rangers and Mortal Kombat, a time when the Turtles were waning in popularity.