Awesome McCoolname: Marina means "of the sea", Lambrini means "bright" or "shining", and Diamandis (of course) means "diamonds." Meaning her full name can be translated as "shining diamonds of the sea."
Which music era is best. Many fans miss the themes and techno-pop influences of the "Electra Heart" album and were disappointed by how different her next album "Froot" was. Conversely, a lot of fans actually think "Froot" is her best album, praising its more mature, nuanced lyrics and cohesive, well-blended sound.
whether Marina's work is feminist or not. On one hand, her music touches on a lot of issues that women face, and "Sex Yeah" is a blatant Take That! to what feminists perceive as the objectification of women. On the other hand, Marina has been seen by some as attempting to distance herself from that demographic ("Do you really want me to write a feminist anthem? I'm happy in the kitchen cooking dinner for my husband"), and some of her songs such as "Girls" and "Better Than That" have faced accusations of Slut-Shaming, although their lyrics (especially "Girls") could be considered satirical as well. This has lead some to think that heralding her work as a feminist masterpiece is a serious case of Misaimed Fandom.
Of course, there is also a third camp of fans who aren't feminists and don't particularly care whether Marina's work is or not.
Continuity Cameo: "Better Than That", while most commonly interpreted as the rumour that Ellie Goulding had a fling with Marina's boyfriend, is also interpreted by fans as being a throwback to "Electra Heart", the title character of which acted very similarly to the promiscuous, deceitful back-stabber referred to in the song.
Critical Backlash/Critical Dissonance: Electra Heart was negatively reviewed by critics, but it was well received by fans, resulting in the album charting #1 in the UK and Ireland.
Averted with "Froot" which was both commercially and critically successful (her highest selling album to date in the United States). One critic even compared the album to True Blue era Madonna.
Ear Worm: "Oh No!" can get inside your head and wind up unable to break out.
"Primadonna" and "Homewrecker" too.
"I'm Miss Sugar Pink, liquor liquor lips, I'm gonna be your bubblegum bitch."
I don't want to be Blue anymore. BBBBLLUUUUUUEEEEEEEEEEEEEEEEE
With Lana Del Rey. To the point on Tumblr users often associate them with each other.
Melanie Martinez fans are becoming a part of the mix too. It helps many fans enjoy all three singers.
With Charli XCX fans ("Angels"), since they toured together and recorded a song together ("Just Desserts"), and both make electropop music with feminist themes.
Germans Love David Hasselhoff: Marina has commented that her fans in the UK took the "Electra Heart" album, and particularly its opening song, "Bubblegum Bitch" very seriously (and therefore totally misunderstood the theme of the album). In contrast, her American fans better understood the irony she wanted to get across.
Growing the Beard: Arguably with Froot, with it's more nuanced and stylistically varied production as well as an overall more contemplative and emotional tone- in contrast to the more bluntly satirical The Family Jewels and Electra Heart.
LGBT Fanbase: Given her elaborate art/camp style and her pointed subversion of stereotypical gender tropes, it's not surprising she has grown a large international following.