Kyle

Okay okay, let's start with the Basics. In September of 2014 MrSpongeSphere's Twitter became a reality:

After that, it can be seen that Richard and MrSpongeSphere are "roommates" (oh my god they were roommates) and would talk to each other occasionally on Twitter.

They had a friendship. A happy nice friendship, you know this picture? Happy:

See, happy! They were happy roommates!

Then, things started happening. This post is before the one up above, but I believe it is what started EVERYTHING

MrSpongeSphere stole some of Richard's cereal. A crime that can not be punishable by the law, but SHOULD BE. I believe this pushed Richard and MrSpongeSphere to have a distant, angry friendship. Before this, MrSpongeSphere was an "annoyance". He would Keep Richard up at night:

(PSA: this image may not be entirely accurate considering I can't find the original tweet.)

This + the cereal stealing could have caused Richard to realize MrSpongeSphere wasn't who he said he was. MrSpongeSphere wasn't a good roommate.... He was a nuisance.

Then... Things got even more dicey.

They had a disagreement. The waters begin being deadly for those involved. Then...

Ciara and Richard start dating. This causes MrSpongeSphere to be upset. He isn't going to be spending much time with her anymore, because now she's trying to give him up to whoever Giddy is. Then...

Ciara and Richard were dating at this point, and MrSpongeSphere... He seems to be jealous. He states how she "chose Richard" and that "they could have been something great". MrSpongeSphere sees this badly.

He is resentful towards Richard. He doesn't want to have dinner with Richard, but Ciara says they will be.

MrSpongeSphere is heartbroken. Richard is upset because they can never have a nice dinner together. He states it's impossible for them to have a nice dinner because of MrSpongeSphere.

Richard sees their relationship, their friendship, is falling apart. MrSpongeSphere wants to be with the girl he's dating, and he knows MrSpongeSphere will do anything he can to be will Ciara. So what happens next?

The link goes to THIS video, which is the Music Video: Down in The DM by Yo Gotti.

MrSpongeSphere says that she's putting him on blast, which means "Down in the DM" is exactly what's happening. MrSpongeSphere must have been talking to her privately in DM's, or talking Richard in his DM's... And he has done something.

This is the very last thing we see him post:

May 23rd, 2016.

MrSpongeSphere has been inactive for 4 years, 6 months, and 20 days.

He has gone missing. I haven't seen any other pictures of him than the ones that have been made before this date, unless I am wrong, and my research has been ineffective.

The last person to have seen MrSpongeSphere would have bee Richard Harmon, since Richard is the one who was his roommate, and since MrSpongeSphere didn't leave him on his own, the only logical conclusion... Is that Richard Harmon... Actor of John Murphy, Murdered MrSpongeSphere.