Enzo March"Don't underestimate him for some dumb jock."
Both Riddley and Enzo excel in athletics and their studies. As they are both demigods of War, Enzo has been a friendly rival to Riddley since his arrival at Olympus Academy. She welcomes his competition to keep her on her toes and values him as an ally among the conflict.
Micah Everwood"I'd be even more serious without Micah around."
Micah and Riddley have been friends since they both started as freshmen at Olympus Academy. He adds much needed sunshine to her cloudy days, and she trusts him as a confidant when she feels like she can't lean on others. He's a good contrast to her more serious, tactful nature.
Hudson FulbrightAlthough Hudson had been someone to avoid in the past, Riddley has conveniently warmed up to him with the conflict brewing knowing that Hades is still likely bitter toward his younger brother. She doesn't trust Hudson like she does Enzo, but she recognizes importance and value when she sees it even if she isn't very public with her friendliness toward him.
Alexander BertilRiddley happily exists as a thorn in Alexander's side. She has little patience for the daddy's boy, and she (hypocritically) finds his support of his own father to be him taking an easy stance on the brewing conflict. The distaste goes both ways, but she sometimes finds it hard to compete against a literal prince when she's a little rough around the edges.