Under a dark and ominous sky, pierced by lightning, a man wearing a sinister hood summons a... "dragon"!  Shimoda and some of the designers were trying to fulfill the order "has not wings but flies anyway" and were checking out the dragon for inspiration. However, a harried looking Mizushima rushes onto the scene.
That's why I based it on a bird which has 
a combined anus and urethra.
لذا استعملتُ طيراً يحمل فتحة شرج
ومجرى بول مشتركين كأساس
Also haben wir einen Vogel genommen,
bei dem After und Harnleiter verbunden sind.
De ahí un ave como base,
pues combinan ano y uretra.
De ahí un ave como base,
pues combinan ano y uretra.
D’où un oiseau, pour lequel
anus et urètre ne font qu’un.
Per questo abbiamo usato un uccello come base, 
visto che hanno l'ano e l'uretra combinati.
Por isso usei uma ave como base,
porque o ânus e a uretra se combinam.
Поэтому база птичья:
у них анус совмещён с уретрой.