The Liveman suits don't particularly appear to be battle gear, to put it generously. Of course, they were designed by the wearers in memory of their fallen friends - and their original peaceful goals.
Super Sentai Time! It only recently struck me that, in Liveman, they have Animal Mecha for a reason (and on top of that, they're overkill for the reason they were built). Jet Falcon is a jet fighter armed with lasers and talons(!), meaning it can engage in mid-range and melee-range air combat. Land Lion is a quadrupedal lion mecha with useful jaws and two large cannons on its back, giving it mid- and melee-range capabilities. Aqua Dolphin looks like a couple of dolphins attached together, with tank treads as well, fighting with missiles/torpedoes. They are designed to be far more capable than they need to be (a jet that can attack at melee range; what is theoretically - the special effects of the time couldn't possibly show this - the most agile tank ever built; a submarine that can drive up to surface targets). This is because the designers had no idea what they would have to face, and subsequently over-engineered their Humongous Mecha to the point that they didn't need to combine - that they were Combining Mecha at all was an afterthought, installed by their mentor, who foresaw that their enemies might have some sort of humanoid Humongous Mecha. Awesome.
In one episode, the topic of friendship comes up in the Volt base, and Butchy remarks to Guildos that that's something they can't understand as aliens. This seems a bit odd at first, until the revelation that they're both robots happens. Of course Bias wouldn't program them with something he felt was useless.
Bias and Gash's death scene is regarded by many to be a Tear Jerker, despite the fact that it was made blatantly clear before and after that Bias is a monster who deserves no sympathy. Then you realize that this is actually a Karmic Death; Bias was fighting against aging, other people, and weakness, but died a fragile old man accompanied by Gash, just as he deserved.