Aluminium Christmas Trees: When Kaname teasingly asks Sousuke if he knows what condoms are for, he responds with a shrug that they're for carrying water. Kaname is confused. However, many survival experts recommend using a condom as a water bag in survival situations: they're very small and lightweight, the rubber is tougher and less sensitive to heat than the plastics used in plastic bags, and a condom easily stretches big enough to hold a quart of water.
Actor Allusion: The English dub created one by casting Spike Spencer, the English voice of Shinji Ikari, as Takuma, who protests that he doesn't want to climb into a giant mecha and is told that he mustn't run away.
Likewise, when Kurz introduces himself to Kaname and Kyoko, he puts on a Funny Foreigner act. In the dub, he affects an Italian accent; Vic Mignogna is of Italian descent.
Allison Keith previously played Misato Katsuragi, a woman who likes to drink beer to relax and arms herself with a USP pistol.
Author Existence Failure: Mike Kleinhenz passed away only a few years after The Second Raid's dub was released, meaning that when Invisible Raid is inevitably dubbed in English someone will need to take over as Kalinin.
The Danza: Yukari, the AI in Kurz's Arm Slave, is voiced by Yukari Tamura. This also partly crosses with Comic-Book Fantasy Casting, since the original novels noted that Kurz intentionally modeled the AI on "a popular Japanese idol", even providing voice samples.
Super Robot Wars: Appears in Judgement, W (which includes The Second Raid) and in Z3 (which includes the light novels). However, in order to avoid "pre-casting" any potential anime sequels, only the characters who had already appeared in the anime were voiced, meaning novel-exclusive characters like Leonard's minions and Nami are left out in the cold. However, that was mostly thrown out the window in V, as all 3 of Leonard's minions serve as bosses (and are, therefore, voiced); Lee Fawler is voiced by Tomokazu Sugita, Wilhelm Casper by Masaki Terasoma, and Sabina Lefnio by Marina Inoue.
Too Soon: The name of Sōsuke Sagara's "home" country (Afghanistan) was changed in the anime and translation to a fictional country (Helmajistan).
Likewise, the second half of Fumoffu episode 1, in which Sōsuke (fakes) kidnapping a young boy to use as leverage against thugs who kidnapped Kaname, never aired on Japanese TV due to a string of kidnapping cases at the time.