Icy and Stormy's opinions on Riven
Icy: really just sees him as a waste of time. Yes, he brought the trix valuable information, but Icy thinks they easily could have figured it out on their own. She didn't like that Darcy was distracted and was also probably a little jealous that Darcy was creating a life outside of her sisters
Stormy: Stormy HATES Riven. She thinks he is obnoxious, loud, and aggressive (All things she is). She also didn't like him taking her big sister away. There would be five minute stretches when Stormy and Riven would get along really well because they have similar personalities and senses of humors, but then Stormy would suddenly remember she hates him and go back to glaring at him while Darcy rolls her eyes.