Let’s see as we are going from left to right
One was adopted by Twilight(spike#1)(mlp)
One I don’t know(spike#2)(rugrats)
One has to deal with an insane cat(spike#3)(tom and Jerry)
One lives in the desert(spike#4)(peanuts)

With “Cheer You On”, if Spike was there, it would have made the JVJ-24601 sound like the Invince-A-Tron (Blast Off To Mars) again.

@MLPFiMFan2232  
Spike is a regalur given name

I can tell a difference.
 
The real spike is the 1st one.
 
The second one must be called Nasty
 
The third one is Churchill
 
The fourth one is Snoopy

So it turns out Spike is not that original of a name.

@MDL  
Ah, I see.

@mdalsted  

 
Dude, they were both referencing a scene from “Putting Your Hoof Down”.
 
Pinkie: “TOO MANY FLUTTERSHYS TO KEEP TRACK OF! MAKE IT STOPPP!”  
Fluttershy: “What’s the matter? Things getting too complicated for your simple little brain, Pinkie Pie?”

@Background Pony #C6F6  
Don’t be a jerk, he’s joking. And even if he wasn’t, there’s literally no point in causing a scene.

@Background Pony #BDB2  
What’s the matter? Things getting too COMPLICATED for your little head?

@mdalsted  
In this situation, they’re the same thing.

@Scrounge  
You mean without making him a human?

Which is which  
I can’t tell them apart

@mdalsted  
Probably as a cheap excuse to keep him with Twilight without making him an equal.

GAH! There are too many dogs named Spike! Time to start using more original names! “Adobe” comes to mind…
 
Why did Spike from MLP get turned into a dog, anyway…?

AAAAAAAAAAAAAAAAA!
 
TOO MUCH SPIKE THE DOG!
 
MAKE IT STOP!

My favourite is Spike the dog.

SPIKES  
SPIKES EVERYWHERE

I like Spike the most.

@achy  
It’s just that i do not watch TV, and most thing i know about TV shows is from the Internet.

@Squirmy Hooves  
Well, whoever said that vampire genitalia thing was just spewing bull.
 
It was from torturing with railroad spies.  
Source: I watched like 7 freaking seasons of Buffy the Vampire Slayer in a few weeks. The name William the Bloody and the torturing with railroad spikes was disclosed by Guiles early on. (Guiles also thought that the Bloody name came a reputation for viciousness). A few seasons later, Spike had his own flashback episode about how he became a vampire where it was heavily implied that that he would eventually torture people with railroad spikes, confirming Guiles’s earlier story, but also showing that the William the Bloody name was earned by him being a terrible poet.

Look what Megaman is weak to.  

@achy  
I read it on TVtropes… It said he took his name from liking railroad spikes as sorta of a platonic fetish, but has never been seen talking about them, and suggested that a “spike” is also a word for male vampire genitalia.
 
I believe it was on a page about people in cartoons and films going by the nickname “Spike”. (there is also similiar pages for people going by “Jack”, “Ryu”, and “Sakura” for anime.)

@Squirmy Hooves
 
It occurs to me that the vampire genitalia comment may not have been candid.

@Squirmy Hooves
 
Uh, Spike is the name he took because he liked to torture his victims with railroad spikes. He was inspired to do this because before he was a vampire he was known as William the Bloody awful poet, and people said they would prefer to be tortured with a railroad spike instead of having to listen to his poetry. Then when he became a vampire, he switched to the physical torturing instead of poetry. Did you even watch Buffy the Vampire Slayer?

@chaos15  
Spike is just his vampire name, and it actually stands for a male vampire s’ genitalia.