The only place that currently has bosses is New York and it only has 4.
Bosses are EXTREMELY easy to defeat you don’t even have to have really any power at all.
You can always take the easy way out by just using your items. They do not take up a turn so you wont even get hit.
Just a note however, You can not challenge the next boss until you beat the first one!
You also get to bring in 2 of your toughest friends to help out!

Confront Giancarlo Morillo: Street Thug
This guy is a chump! simply attack and he’ll be done.
Use items if needed.

Blackmail Letter received for winning

Confront Detective West: Associate
Little bit harder, but still nothing serious.

Police badge received for winning

Confront Luis Castana: Soldier
Harder, if you have no strength use stun guns.

Pair of Broken Glasses received for winning

Confront Agostino Cleto: Enforcer
This guy has 2 body guards that you have to kill first.
They’re pretty simple, my character with only 17 attack/defense can kill them.
However, Agostino Cleto hits HARD. He can take off up to 100 hit points at a time.
Be careful, I use my stun gun about 4 times and hes dead.

Military I.D received for winning

Good luck!