The average height of the playable characters (as of EV) is 160.9 cm.
The average bust size of the playable characters (as of EV) is 87.5 cm.
The three characters with biggest bust are, in descending order: Murasaki, Daidouji and Haruka.
The three characters with the tallest height are, in descending order: Murakumo, Kurohoro and Daidoji.
Trivia items
Adaptation First: The anime adaptation was simulcast online courtesy of Funimation before any of the games left Japan.
Creator's Favorite: Takaki once stated in an interview that Hibari was his favorite character in the series and designed her turnover after his love for track suits.
The Danza: Yumi shares the same name with her voice actress Yumi Hara, albeit with different kanji.
Doing It for the Art: Takaki himself was addressed about the issue of alienating people with the series' heavy focus on fanservice during an E3 2015 interview with Technology Tell and stated that he honestly doesn't care for those who are turned off by the fanservice, as long as he gets to make the games for him and fans to enjoy.
Dueling Games: The PC port of Shinovi Versus with the PC port of Onechanbara: Z2 Chaos, both being fanservicy, Dynasty Warriors-esque action games. That said, it's more a friendly rivalry since both are made by the same company.
Executive Meddling: XSEED Games was forced to remove the 'Intimacy Mode' from the PS4 version of Burst Re:Newal after Sony apparently refused to allow the game's release with the mode included.
Tip of the iceberg, it seems; increased censorship from Sony on all of their games in both America and Japan has caused Marvelous to "seriously reconsider" how fanservice is dealt with from the seventh game onward. This didn't sit very well with series creator Kenichiro Takaki, who left the company in March 2019 leaving 7EVEN stuck in Development Hell for the time being.
Keep Circulating the Tapes: In late March 2021, the Dead or Alive DLC for Estival Versus was removed from the PSN and Steam due to the licensing rights expiring. This means that if you didn't download Ayane beforehand, you're SOL. It remains to be seen whether this fate will eventually befall the Ikki Tousen DLC, or the crossover DLC for Peach Beach Splash.
No Dub for You: Because the Clothing Damage would make a dub uncomfortable, the games were left dubless. Subverted with the anime, though, possibly because Funimation doesn't have that kind of issue.
No Export for You: One of the five manga have been translated. The mobile games and card games have never left Japan.
The Other Darrin: in the Shinovi Master adaptation, Haruka is now voiced by Gertude Cruz instead of Teri Rodgers.
Playing Against Type: Homura's not the usual type of role for either her Japanese or English voice actresses to voice. Although a flashback in the anime showed that when she was still a good shinobi, her voice was much higher, even having Monica Rial doing her usual cute girl voice in the dub.
Screwed by the Lawyers: Initially the Ikki Tousen characters were not available in the overseas and other Asian versions of Estival Versus due to the rights issues. There existed retextured versions of the characters, but only so that overseas players can still battle against those in Japan using them and are not available for download. The characters have since (when the PC versions were released) been made available, where they become available in all platforms, albeit with a slight name change (using the original Chinese renderings of the people they were based on rather than the Japanese renderings used in that series).
Vaporware: Senran Kagura 7EVEN was teased at the end of 2017's Peach Beach Splash. As of August 2021, virtually no new has come from the title. Many have speculated that the title was quietly shelved, but Marvelous hasn't said anything officially about it.
Katsuragi was originally supposed to be the main protagonist of the Hanzō girls, but Takaki thought that this would seem too familiar to a certain female protagonist from another fanservice anime. So he decided to make Asuka the lead instead.
The older concept art reveals that series was originally going to have flat-chested characters instead of big-breasted ones. The only character who stayed true to there original concept, and serves as a nod to it, is Mirai.
Some of the New Wave shinobi are actually scrapped concepts of the main casts:
Hisui is based on Asuka's scrapped sentai ninja concept.
Muramasa is the combination of Hibari's old robot design and Haruka's early character design.
Syuri is the early concept of a magical girl ninja, which, jarringly enough, was originally going to be Hikage.
In a similar vein, Ryobi was originally created as a potential design for Rin.
Hanzo and Kiriya were considered for playable characters in Shinovi Versus, as evidenced by their unused models being found in the files of the PC port.
In Shinovi Versus, the Crimson Squad's ending was originally meant to be the canon ending, but due to a combination of the skyrocketing popularity of the Gessen girls (Yumi especially) and the lukewarm reception Deep Crimson received, this was ultimately changed, and the canon ending became the Gessen ending with elements from the other three endings added in.
Takaki originally drafted Portrait Of Girls to end with the Hanzo and Hebijo girls final confrontation resulting in a Mutual Kill for both sides. This was changed after he realized that the game had the potential to lead into a franchise.
According to XSEED, the series was almost localised as Ninjugs before better judgment prevailed.
On their official Tumblr, XSEED mentioned that Shinovi Versus was planned to have an English dub, but the number of characters would have made things expensive for the team. Not to mention as noted above the premise of the series made it uncomfortable.
the 'Intimacy Mode' from the PS4 version of Burst Re:Newal after Sony apparently refused to allow the game's release with the mode included.