Hmm… round blob to cute pal to badass monster to inexplicably humanoid form… yep, this checks out!

if Spikezilla is Spike Ozaru so than Spike Ultimate is Spike super saiyan 4

power of Fight of Spike  
Spike baby= 4  
Spike Normal=40  
Spikezilla=4.000  
Spike SSJ4=7.200.000

Spike: i am going to become a super saiyan 4  
Applejack:what  
Spike: no but, just shooting  
Twilight: ready to fight.  
Spike: AAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHH  
Fluttershy: what think do?  
Rarity:spike  
Spike:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH………….. ROAR  
pinkie pie: OH no spike become a dragon gigant  
CMC:What?  
Spike:Roar  
Rarity: TWILIGHT stop now, if spike become a beast, he lost the reasoning, and destroying ponyville  
Twilight: To Win, he should a super saiyan 4, to you,Pinkie Pie,Fluttershy,Rainbow dash and Applejack were jixed by discord once time, but they have the enough reasoning, there are not options.  
Rarity: Twilight  
Twilight:All depend of spike  
Everypony(except twilight): you have reason  
Spike:roar  
Rarity: OH NO  
Fluttershy:Spike  
Spike:Applejack  
Applejack: just was kidding.  
Rarity: he will became in super saiyan 4.  
Spike: I am ready applejack

@Background Pony #3F30  
yeah i can see now

spike ultimate he looks like a Super saiyan 4

@Background Pony #FA94  
the new toy just cements that

Congratulations, Spike, you’re the new Agumon.

@Puto-Chef  
how so? it might make sense once we’re familiar with how the system works.

@gato  
Some of Don’t even Make Sense!

@Fonypan  

 
Not really. Lots of Digimon stay organic during their evos.

@Eeveeinheat  
I’ve always thought squared head Spike looked kind of silly and stupid, so no your not the only one who hates it.

@gato  
Well, it kinda makes sense in that Evolution is meant to differ depending on environmental situations and stuff. Seems a lot more like Evolution than what Pokemon have, which is more of a Metamorphosis than Evolution

@gato  
so that explains geogreymon…

Digievolutions always confused me…
 

 
It’s a tad more complicated than Pokémons at the very least.

@Blood Brandy  
it’s more like what BP#9B40 said, dog spike is more of a side evolution like the armor digivolve in 02.
 
 
@Eeveeinheat  
personally it’s the legs that ruin the design for me

I’d say Dog Spike is Mega in the same way MarineAngemon is

I really hope I am not the only one who hates Spikes ‘ultimate’ design… I’m not, right?

Digivolve!

@Fonypan  
that’s probably mega level

Where’s the mecha Spike? All digimon have a mecha for for no reason.

you could have made it like a flawed side evolution