Its hard to give advice for these matchups unless I know what youre specifically having problems with but Ill try to give some general tips and random useful facts;
Generally when you karakusa them you either want to follow up with fp xx ex hayate or sa II (assuming your using it) especially against Hugo because a mashed or well timed 360/720 will beat out pretty much anything you will do in the post hayate mix-up. (Alex to a lesser existent with his boomerang raid) Anyways neither of them have a very good wakeup outside of super anyways.
The s. fp post ex hayate reset in the corner is your friend.
-------Hugo: (Note: depending on super his playing style can very greatly)------------
Zone him out with pokes and play keep away to build meter, once you knock him down establish your mix-up early.
Rushing down mindlessly in this match will get you sent out real quick if the Hugo knows what he is doing or even possibly if he mashes his 360.
The keep away will give you time to build meter and force Hugo to go on the offensive and to your side of the screen.
If they chose to turtle fine look for a time to dash in throw/karakusa/tick karakusa (this would be when they stop moving or hitting any buttons) Use this
opportunity to push them towards their corner to start your corner mix-up hopefully leading to the s. fp post ex hayate reset for a whole lot o stun which
leads to them being stunned and the round being over.
Random Hugo notes:
Ex fukiage beats/trades with all his high/overhead attacks (s. fp, claps, etc) throwing this out every once in a while or if theyre overhead is obvious will make them think twice about using it when they knock you down allowing you to guess your way out of his wakeup mix-up with more ease.
Jumping rh beats his anti air command grab super or regular, jumping away forward can also. Tsurugi can beat it depending on how it hits. Ex tsurugi loses cleanly to the regular version and super (moonsault press).
You use an instant air tsurugi from about max dash range to try to bait his cr fwd to hayate in or dash in behind it.
Ehh Alex will have to wait till later.