This is written in game rules and FAQ.
Some characters give a 4 points penalty at the end of each match in Daily Tournament. You can see the list of these characters below:
Group A ( - 10 points ):
GraksmxxT , DJ Korr Cr , Kiki Cr , General Cr ,Lyse Teria Cr , Vickie Cr , Ambre , Hugo , Jackie Cr , Marco Cr , Alec Cr ,Lamar Cr , Smokey Cr , Tanaereva Cr , Guru Cr , Caelus Cr , Eyrik ,Eklore , Morphun

Group B ( - 5 points ):
Kolos , Copper , Striker , Rolph , Emeth ,Oshitsune , Kerry , Shann , Gil , Ghumbo ,Marina , Naginata , Spyke , Slyde , Eddie ,Bonnie Ld , Sigma

Group C ( - 2 points ):
Rowdy , Sledg , Lou , Zatman , Ulrich , Ratanah, Hawk , Wee Lee , Toro , Yayoi , Shakra , Askai ,Dorian , Cliff

I am confused. It says that some characters give 4 points penalty, but there are only 3 groups of cards (ABC) with -10, -5 and -2 points penalty. Can somebody explain me, how this really works? Ty