These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Horror: The kaiju are portrayed as genuinely horrifying. Almost all of them feed on humans(onscreen!) and each one has its own sinister modus operandi. People die horribly, and those who survive are left broken and traumatized, many to the point of insanity. Darker and Edgier, right? It would be, except that these monsters are IDENTICAL in EVERY way to the monsters of all previous and subsequent Ultra series.
Jun Himeya's Meta Field collapses during a fight with the Space Beast Golgolem. As it shatters, the alien looking structures in the field rupture and the area floods with strange frothy liquid. The Meta Field is later revealed to be a projection of the host's own physical essence. What you're watching is Ultraman's internal organs burst.
Moral Event Horizon: The big reveal that the Unknown Hand is actually Night Raider team member Mitsuhiko Ishibori is accomplished by him casually shooting Shiori Hiraki, his always bubbly partner, point blank.
A little girl named Riko has her parents transformed into spawn by the Space Beast Nosferu and she is implanted into a pulsating fleshy sack in the beast's head. When rescued and mindwiped by the Memory Police, something goes horribly wrong and her personality and other memories are deleted forcing her to relive ONLY memories of the traumatic event.
Stoic Woobie: Night Raider gunner Shiori Hiraki is revealed to maintain her perpetually upbeat personality to hide her emotional distress from her boyfriend being mindwiped into forgetting her and marrying her best friend.
Tear Jerker: Jun Himeya gets to watch an orphan named Sera get blown to bits in front of his eyes.