Here is my version of ironman, is accurate in absolutely nothing...
the "fury-bar concept" :
The capacity of fury fills when you chain normal and special, and empties slowly during the fight.
Three levels can be reached (indicate by the color of the light).
Once the level 3 achieves, you have fifteen seconds to launch a fury before the capacity returns to zero!
Every fury makes lower the capacity (1/6, 1/3 and the totality).
The capacity of striker fills when you are hit by opponent and every time you launch a super !
When the capacity is full: two seeing flash, and allow you to call twice "Thor" to help you in the fight.
The capacities are put back to zero only at every end of the match (and when you use them) and can be fill as often as you wish it
Spoiler, click to toggle visibilty
Download link : on my website here. (It's in french but you can understand, i hope....)
All feed-back are welcome, and thanks to report any bugs...