Pepe the Frog is an Internet meme consisting of a green anthropomorphic frog with a humanoid body. Pepe originated in a 2005 comic by Matt Furie called Boy's Club. It became an Internet meme when its popularity steadily grew across Myspace, Gaia Online and 4chan in 2008. By 2015, it had become one of the most popular memes used on 4chan and Tumblr. Different types of Pepe include "Sad Frog", "Smug Frog", "Angry Pepe", "Feels Frog", and "You will never..." Frog. Since 2014, 'rare Pepes' have been posted on the 'meme market' as if they were trading cards.
Doge is an Internet meme that became popular in 2013. The meme typically consists of a picture of Kabosu, a Shiba Inu dog accompanied by multicolored text in Comic Sans font in the foreground. The text, representing a kind of internal monologue, is deliberately written in a form of broken English.
Tails Gets Trolled is a mod based off of an ongoing webcomic of the same name created by Lazerbot. Originally released in 2011, it's based off mainly the franchise "Sonic The Hedgehog" but also has characters from a lot more series, most notably Mario from "Super Mario Bros". It focuses on the titular character, Tails, being trolled, which leads to a series of events centered around revenge, multiple opposing factions, betrayal, necromancy, the clap, weed, romance, and more. The comic can be read