Pugsy, tanks for reply me.
Well...
I tried get a save states in others emulators how in MAME32 0.90, when you find many mk cheats for me. But, unfortunately when open the save state Smoke and Jade don't appears behind the tree every, because is very random.
Now, using this save states in MAME32 Plus Plus 0.119, Smoke and Jade every appear using this save states in MAME32 Plus Plus 0.119.
Emulator:
http://www.zophar.net/mame/mame32-plus-plus.html
Save States: (Pugsy, MediaFire is good for you?)
http://www.mediafire.com/?m3i3g14cdlittr2
*Save State 1 - Smoke appears behind the tree in Living Forest.
*Save State 2 - Jade appears behind the tree in Living Forest.
*Save State 3 - No appear secret characters behind the tree in Living Forest.
Note: After open the save state, don't press any button in Battle Plan.
But...
If you press any button in Battle Plan before fight, Smoke and Jade don't appers behind the tree.
Smoke and Jade appears in 84 to 83 seconds in first time.
Unfortunately, I haven't very knowledge in debugger. When I find cheats, is using WinHex or random...
Thanks again, Pugsy.