|Occupation:||Bomb Expert, Would-Be Servalan Assassin|
|Relationships:||Hal Mellanby (father); Lauren (adoptive sister); Justin (mentor); Servalan (enemy)|
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Dayna Mellanby is a major character in Blake's 7. She is played by Josette Simon.
- Weapons expert, especially bombs
- Brought up in isolation in an underwater base on a planet peopled by savages
- Long-running personal feud with Servalan, who killed her father
- Kisses Avon ('Aftermath'), nearly has sex with Tarrant ('Ultraworld') & has a Lolita-esque past with Justin ('Animals')
- Shot on Gauda Prime
- An early character of colour on British television
If I had to reduce Dayna to some kind of social archetype, I'd probably settle for 'bolshy teenager'. This in itself makes her refreshing, a welcome change from all those sensible professional types from the first two seasons. Not that I particularly like bolshy teenagers - in fact I'd gladly see them all guillotined - but as a contrast to the previous crew Dayna was a shot in the arm. Her practice of carping at Vila captures her immaturity rather nicely, though actual examples are hard to pin down. It was most marked in Sarcophagus, where Tanith Lee managed to bring out many of the essential facets of the main characters without reducing them to crude stereotypes. ...
In conclusion, Dayna can be regarded as the most frequently disregarded regular character in fan discussion, and yet - paradoxically one of the best defined in the episodes regarding her background and the effect it has on her future development. She is, in many respects, a B7 character par excellence, with a good mix of positive and negative qualities. Intelligent yet recklessly spontaneous, undoubtedly brave yet hardly invulnerable to fear (witness her reaction to Doorman's cave monster), quick to form an opinion but nevertheless open to reasoned argument. She is petty, immature and potentially quite spiteful, but also loyal, trustworthy and dependable. I'm also inclined to think she was rather lonely' alienated from the others by her age and her isolated upbringing, and it was this that brought out both the best and worst in her. (Neil Faulkner)
Dayna is badly done by throughout the show. One of the examples which I find most annoying is in one of my favourite episodes, 'Sarcophagus', where we suddenly see Dayna playing a musical instrument as her 'character trait'. So I agree that as a general rule, Dayna suffers from deeply poor characterization. ...
Dayna at last gets an episode to herself (her first since her appearance in Aftermath) ... It's just a shame that the most woefully under-used character in the entire show has to inherit an episode, rather than getting one which was written for her. But that's a failing of the season as a whole, rather than the episode in particular. (Una McCormack)
Dayna is a much better character in her first two episodes (again written by Terry Nation); she is much more gutsy, aggressive and impulsive. You couldn't be sure she would do what Avon told her and she seemed to have the potential to rival his leadership until other writers got hold of her and turned her into a wimp.
Although Avon suggested he didn't trust anyone, he knew he could trust all the Liberator crew if he needed to. But Dayna could have been an exception; how would Avon have dealt with having her on board if she'd developed the way she appeared to be going? Consider "Aftermath" where he has to trust Dayna not to kill Servalan. I forget the exact quote but his line something like, "I don't want to hear afterwards that it was an accident," shows that she was giving him cause for concern already. I reckon these two could have had some great confrontations, but sadly they didn't.She was supposed to be a warrior but she seemed to turn into just someone with some fancy weapons. In the fourth season the warrior role was largely taken over by Soolin and Dayna ended up with nothing to do. For example, in Games all the crew go onto the space station at the end and have something to do in defeating the defences (Soolin - gunfighting, Tarrant - piloting, Vila - lockpicking, Avon - being very clever), all the crew except Dayna who stays on Scorpio, presumably because the writer couldn't think of anything for her to do. Sad. (Eddie C.) 
Dayna, as you may have noticed, is female. This means that, in keeping with the rules of Blake's 7, she should soon be sidelined, destined to become decorative but pointless. Somehow, however, she isn't. Dayna seems to be the one female character that the writers actually liked, on top of which she's one of the best things to happen to the show in a long time. She arrives fully realised. We know more about her by the end of this, her first episode, than we know about any of the other characters on the show - even Avon, the only person who has so far come anywhere near to bothering all three dimensions. She has a father and a sister, a home, a past, hobbies, clearly defined talents and character strengths and flaws. She's also played by probably the best actor we've had so far. Fond of Avon though I am, I don't think anybody has ever really considered complimenting Paul Darrow on the splendid subtleties of his performance; and whilst Gareth Thomas is actually quite well respected, he's tended to spend much of the past couple of series not bothering to do much. Josette Simon has spent time with the Royal Shakespeare Company though, and it shows. Or it does in this episode. Admittedly it's not often that she gets the opportunity, but it's always the thought that counts. (swordznsorcery) 
Dayna is one of the less popular main crew characters in fanworks. Judith Proctor stated in 2001 There aren't many good Dayna stories around. It's unclear whether this reflects inherent bias against characters of colour, or can simply be ascribed to being a female character who joined the crew halfway through the series and didn't receive a great deal of focus in canon. Neil Faulkner has hypothesised that her relatively detailed canonical backstory left few gaps for fanwriters to fill, and few stories explore her history before the Liberator. He also suggested that Josette Simon's lack of interest in appearing at conventions might be another factor. Much ensemble fanfiction treats her as a plot device, with her canonical habit of concealing bombs in her clothing coming in handy in many a tight spot.
Her most popular het pairings are Tarrant/Dayna, building on the Aliens (Nearly) Made Them Do It in 'Ultraworld' & Avon/Dayna, building on their canonical kiss; both are relatively rare pairings. Vila/Dayna has also been written and there's even a little Blake/Dayna, usually set post-Gauda Prime. She is moderately popular in femslash; Dayna/Soolin was the predominant pairing up until 2001 & a little Cally/Dayna has also been written. A sexually curious virginal Dayna is a common trope in pairing-focused stories, and she's often written as adventurous in bed.
Lynn Cherny observes the fanon that Dayna is Avon's most staunch supporter and loyal follower: Especially in PGP stories. This has some basis in the show, although she does one or twice argue with him or question his motives.
Dayna is even rarer as a subject for fanart. Chevron states that she is swift, graceful and deadly as a jungle cat and notes that she's been portrayed with a snow leopard. Most art is gen, especially ensembles with other crew members; one exception is a nude Dayna riding a horse in Tales from Space City 2.
Meta about Dayna is likewise sparse. Popular topics include parallels with Shakespeare's The Tempest in her upbringing, discussion of how her character evolved over the series, and comparisons with other female characters. There is little discussion of her race, even though few other non-white characters appear in the series.
- The World Turned Upside Down by Sandy Hall. AU post-'Terminal' focusing on the relationship between Dayna & Avon; the only Dayna-centric novel known to Judith (1987)
- Pilot Program by Willa Shakespeare. Amnesia post-Gauda Prime; Tarrant/Dayna (1994)
- Hearts of Glass by Rhapsodie. A rare example of Vila/Dayna (1995)
- 'The Price of a Friend' by Vicki Childs in Gambit 14 (1996)
- Vi Et Armis by Alicia Ann Fox. Avon/Dayna (1997)
- May King by Susan Cutter. Various Dayna pairings, both het & femslash, including Dayna/Lauren (1998)
- Songs of Innocence and Experience by Nova. Dayna/Soolin (2002)
- Wish Upon a Shooting Star by Nicola Mody. Ansty backstory ficlet (2005)
- The Definition of Animals by Nicola Mody. Unusual AU of 'Animals' (2006)
- The Future Is What You Make It by Roseveare. Dayna/Soolin where they are the only survivors PGP. Written for the My Old Fandom exchange (2016)
- Let's Hear It for Dayna by Neil Faulkner (1996)
- Animals - Not a Turkey by Una McCormack – a defence of the unpopular Dayna-centric episode, 'Animals' (~2000)
 by Jurgen van de Sanden. Pencil portrait (unknown date)
- Dayna by Leyna-art. Pen & ink portrait (unknown date)
- Day Twenty-seven by vandonovan. Pencil portrait (2008)
- Dayna - Blake's 7 by Marker-Mistress. Full-length action shot; marker pens (2011)
Interior page from Chronicles #17/18
Cover of Orbit #9
Interior art from Enarraré
Dayna & Tarrant on 'May King' cover; by 'Whitby27'
Dayna & Tarrant on Horizon cover; by Tim Pieraccini
Dayna, Vila & Tarrant on Avon's 8 cover; by Evelyn Turner
Inside page of The Seven Live On #6
- Hermit.org: Let's Hear It for Dayna (accessed 25 September 2015)
- Animals - not a turkey (accessed 26 September 2015)
- Sue Clerc 'Avon and women' Lysator 15 November 1992 (downloaded from Lysator)
- Eddie C. "Dayna - What she might have been (more defence of Terry's female characters)" on Lysator, 19 November 1992
- From a livejournal review of Aftermath, October 25, 2012
- In the Hermit Library, fewer works are tagged for her than Tarrant, who is introduced at the same time, and Cally & Jenna, two of the other female characters. She gets about the same number of works as Olag Gan and rather more than Soolin, who appeared in only a single season. As of September 2015, the stats on AO3 are broadly similar.
- Hermit.org: Recomended Fanzines for Dayna (accessed 25 September 2015)
- Neil Faulkner 'Good Women Wasted' AltaZine 6: 13–15
- Nova. '(Re)Making Space for Women' Sleer as Folk 308–322
- Recurring Themes in Blake's 7 Fan Fiction: PART VII. Getting to Know You: (accessed 25 September 2015)
- Chevron 'Archetypes in Blake's 7' Lysator 18 November 1992 (downloaded from Lysator)
- For example, Blake Revisited: Part 2: The Characters by Frances Teagle (accessed 26 September 2015) & B7 influences by Hafren (accessed 26 September 2015)