And so, this concludes the transformation. Hope you all enjoy!

Part 1
Part 2
Part 3
Part 4
Part 5

(Edit: Added a bit of additional context)
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Location: [Redacted]
Date: April 20th, 1959
Patient: Vlas Morozov
Weight: 1302 pounds
Height: 6'5

Report:
[Redacted]

Alert Transcript to all staff:
ALERT TO ALL PERSONEL
SUBJECT HAS ESCAPED
I REPEATED
SUBJECT HAS ESCAPED
MOROZOV IS HIGHLY VOLATILE AND SHOULD NOT BE APPROACHED
THE SITE HAS BEEN COMPROMISED
EVACUATE AS SOON AS POSSIBLE

Since my last report, Morozov's form has changed in a number of drastic ways. He is now a full five inches taller than he was at the previous check-up, and to make matters worse, his monstrous features have become significantly more pronounced. His pupils are nigh unrecognizable, resembling those of a snake, rather than a horse.

Note extracted from the private journal of [Redacted]:

[Redacted]

Oh God... he ate them. He [Redacted] SWALLOWED THEM WHOLE. All except me. Why did he leave me?

I have no time to finish that damned report, [Redacted] will have enough to go off of from the half-finished version. Before I meet with whatever grisly fate awaits me, I would like to write down a few final observations:

- Morozov's stomach is insanely bloated, my colleges clearly writhing within.
- Once again, the last pair of his stripes vanished, leading me to believe that he devoured [Redacted] on the 13th, somehow managing to avoid us.
- I believe that these stripes are responsible for his disturbing devouring ability, meaning that they likely function as some sort of capacity indicator as well.
- If he was able to consume three whole people with only one pair's worth of capacity, I don't want to know what his full capacity could be.

(A series of indecipherable scribbling and sketching appears after the notes)

Oh God, oh God, he wants me. I feel it. I know it. But somehow I now...

He will not devour me like he did the others. I'm different now, not only physically.

I am different... to him.

Note from compiler:
Neither Morozov nor [Redacted] were seen after this event, and the infamous serum has yet to resurface. Needless to say, there are a number of companies who would pay a pretty penny for any information concerning this incident.