⊕ Content note for discussion of ableism and tropes of disabled/disfigured-as-villain
One unfortunate facet of both The Avengers and The New Avengers is their often problematic portrayal of disability. The writers and producers of these shows bought into the age-old trope of the disabled/disfigured villain, portraying these kinds of characters with greater or lesser emphasis on how the disability or disfigurement itself is somehow either the root cause of the villainy, or else an outward expression or reflection thereof. (You can read some of my other thoughts on this sort of thing here and here.)
The three episodes that comprise what I am calling the “Cybernauts cycle” are “The Cybernauts” (Season 4) and “Return of the Cybernauts” (Season 5), both by Philip Levene; and “Last of the Cybernauts” (The New Avengers), by Brian Clemens. Each of these episodes rings various changes on both the trope of disabled/disfigured villain and also the perceived conflicts between technology and humanity. However, it is not only tech writ large that is at issue, but also the more specific question of the relationship between humanity and assistive technology. The ways in which the disability/humanity/tech nexus is painted creates arcs within each individual episode, and also an arc that works its way across the cycle as a whole.