The only Dexter I know has a brother called Lincoln
Harvey - really like it
Isaac - love it, one of my favourite boy names
Leon - it's ok. Prefer Leo
Nathan - don't like it but, bizarrely, love Nathaniel
Sebastian - like it
Seth - really don't like this
Tobias - like it but prefer Toby
Zachary - love it
Christian - quite like it
Autumn - really like it
Clara - like it
Harper - like it
Paige - it's ok. Feels a bit dated to me though not sure it is!
Robyn - really like it
Summer - it's ok. For some reason it seems like a smug person's name - I have no idea why!
Thea - really like it
Zoe - quite like it
Tahlia - it's ok
Willow - like it
Great lists actually - for best fits with Dexter combined with what I like best I'd go for Zachary and Autumn
Other ideas:
Boys:
Aidan, Austin, Brogan, Brennan, Braxton, Casper, Carter, Cole, Caleb, Dylan, Ethan, Felix, Fraser, Hayden, Harry, Harrison, Ivan, Jayden, Joel, Jared, Jackson, Kyle, Kayden, Liam, Logan, Lester, Marcus, Mason, Morgan, Nico, Oliver, Owen, Parker, Preston, Phoenix, River, Riley, Reuben, Stanley, Tyler, Tian, Titus
Girls:
Alexis, Ariel, April, Amber, Aria, Anya, Ayla, Avery, Addison, Bonnie, Bronte, Brodie, Callie, Cassidy, Camryn, Crystal, Demi, Darcey, Ebony, Emery, Emerald, Erin, Eden, Fallon, Farrah, Genesis, Hadley, Hayley, Holly, Honey, India, Jade, Jasmine, Jodie, Jordan, Katie, Kayleigh, Kelsey, Lily, Lucy, Layla, Lyla, Lila, Mina, Mila, Mala, Millie, Mollie, Mia, Madison, Michaela, Nicole, Ocean, Piper, Quinn, Riley, Rosie, Roxanne, Savannah, Sienna, Serena, Sabrina, Sadie, Star, Tia, Tianna, Tegan, Taryn, Zia, Zara