There are scenes of characters being followed and attacked. There is also a guy who records every death and murder of cybertronians which may count as stalking?
More than one character explicitly develops, maintains, or recovers from an alcohol abuse problem. British style drinking and pub culture feature heavily in the story.
In a manner of speaking. A fully sentient/anthro character who looks like a robotic version of a cat dies. No pet/domesticated/non-sentient cats are shown dying.
AND HOW.
A character is dismembered for the purpose of restraining him. There isn't any other way to keep him restrained, and he's an attempted murderer several times over (it doesn't stay 'attempted' for long, either) but it's still disturbing.
The Scavengers salvage parts from corpses they find. It’s ambiguous what exactly they do with them, but earlier IDW Transformers entries call show other Decepticons doing this and explicitly call it cannibalism. The DJD are also cannibals, but this is not referred to explicitly.
Helex of the DJD has a built-in smelting chamber that characters are put into. There is a panel during the retelling of Skids’s backstory that graphically shows multiple Transformers being melted alive.
A character appears to fall to their death in an earlier issue, but is revealed to have survived later. A character who automatically transforms into a bomb upon falling jumps off a ledge with the intent to kill enemies below, but the plan fails and he survives uninjured.
One character has no eyes but it isn't talked about. Two characters have their faces partially torn off around their eyes, only one has damage done to the actual eye. Another character has eyes that can be and are usually separated from his body.
A character seduces a character that someone else is in love with in order to manipulate him into a murder plot, but the original lover hadn't confessed yet, so it is worse than cheating, but it's not actually cheating.
Another character is confronted in a bar as to which of the people they've loved, who are now on opposing sides of a war, they would choose to be with if it was up to them, and refuses to answer the question; they're thoroughly offended by the implication that they love the one they're currently living with more.
There is a character who can remotely paralyse and take control of the bodies of others in order to harm them. This has a 'scientific' explanation in the series, but does work a bit like a limited form of possession.
Also, in one of the special issues later in the series, there is a character who has more explicit control over a sleeper agent's actions via brainwashing (?), and who tries to force them to attack their allies.
One focus is mnemosurgery, where someone has needles inserted into their neck. This happens a few times on panel but the needles are shown multiple times.
Not necessarily, but characters are shown visiting the ship’s therapist from time to time. There is a scene early in the comic where a character being triggered in therapy causes him to take and harm hostages.
Multiple characters are shown to behave violently due to trauma or self destructive patterns of behavior. All of these cases are treated with sympathy and nuance.
A character attempts suicide offscreen due to his paranoia, but is rescued in time. A character tries goading another into killing him. A character was previously suicidal prior to meeting his significant other, and this is mentioned multiple times.
Characters do struggle with changes forcibly made to their bodies, or have distaste for their transformation. This doesn't map exactly to body dysmorphia but it feels important to mention.
in the first couple issues theres a line where a character says something along the lines of "i think id have killed myself by then" when referring to a lengthy process of something, but its more of a joke and not serious.
One of Brainstorm’s outlandish creations is a bomb that causes characters to become self-aware that they are in a story. This device causes an arc towards the end of the comic where a character has become aware of the fact that he is a side character and develops severe depression over it.
Not really. Cybertronians are usually made Cabbage Patch Kids style, either being forged, built or created with weird robot magic. There is a character who is a "child", but we do not see their creation on screen, and the robots do not give birth in the human sense.
There are sparks without bodies, which are equivalent to “unborn children”, however, due to the nature by which Transformers are created they are more or less “born” as fully grown adults.
In fact, the majority of the cast is LGBT (this is never treated as abnormal or even addressed - the robots are simply gay and there’s no need for questioning)
In a couple issues there is a character who is against couples showing affection and many readers interpret that as a metaphor for homophobia. A character tries to kill all cold constructed (made artificially from the matrix of leadership) transformers because he believes forged transformers are superior and this sentiment is discussed frequently, many readers interpret this as a metaphor for racism. There is talk of functionism (the idea that certain alt modes are superior and that you have to have a job based on your alt mode) but no one agrees with it, people also interpret this as a metaphor for racism and classism.
One gay character dies (and is tortured) but an alternate universe version of him comes back and the couple gets back together. In the sequel series, one gay characters dies permanently and one dies but is also brought back.
There are characters who will ridicule or tease others for showing emotion, some more seriously than others. However, this is not explicitly gendered (teasing them for crying or being sad, but not because they are male characters crying or being sad).
Some parts are quite gory. Several characters lose arms which are later replaced, one character is cut in half, a character is shown being tortured, bloody dead bodies are shown, many people are killed.