Per 
Object Class: Euclid
Special containment procedures:
The glitch must be contained in a 10 by 10-meter room. It must be supplied with a new videogame every 28 days. The glitch requires every 72 hours, a D-class to engage in a "brawl" with this SCP. The SCP must not be exposed to VR or AR. The last time this happened caused a containment breach resulting in over [REDACTED] casualties
Description: This SCP looks similar to that of a "missingno" from the game pokemon. It could change its appearance at will. The forms it takes are only somewhat related to videogame characters. These include Mario, sonic, and [DATA EXPUNGED]. When it transforms into an entity, it takes on the abilities and personality of the creature. Its personality is one of extremely jubilation and friendliness but is shown to be violent at times. Its Intelegance can be matched with a university professor.
Addendum 1
Docter ███ was granted permission to have a "talk"
Docter ███: So, you are the glitch?
Glitch:⊬⟒⌇ ⟟ ⏃⋔
Docter ███: I need you to speak in eng-
Glitch speaks up again
Glitch: A yes, your "English"
Docter ███: How do you manage to assume your forms?
Glitch: Well… it is a little hard to explain but I could say that I need to [REDACTED] and then [REDACTED].
Docter ███: You literally just kept saying redacted
Glitch: Meh
Docter ███: How are you here
Glitch: Not sure, your world somehow brought me here.
Docter ███: *writing on a notebook, Are there any more of you
Glitch: let me see, there are more of me, but I can't say
Docter: Alright, thank you for your time
