"She's probably dead. Or worse, evil. Or worse, in this game."
Bigger Bad: In his Let's Play of Super Mario World (a homebrew game for the Mega Drive, not that one), the fact Bowser is swiftly disposed of only for Mario to fight a slew of other bosses leads Kiko to believe that Barnett the Elephant, the final boss of the game, has been the real mastermind in the Mushroom Kingdom all along. Bowser was just a lackey.
Big "WHAT?!": In The Legend Of Kyrandia 2: Hand of Fate, Kiko is sent on a fool's quest to pay various questionable people for a trip to the center of the earth. Then he discovers that he could simply have had Zanthia jump down an air vent. His reaction is this.
He gave Enemy Unknown another go, though, and other than the quick loss of SubZero, did MUCH better, actually winning the game. Granted, he didn't do a challenge that time around, but considering how unforgiving these games are, that's hardly something worthy of shame. If anything, it's proof he's still sane.
Early Installment Weirdness: His earlier videos are generally more subdued and feature less of his typical whimsical humor.
Face Palm: In his Let's Play of Dungeon Quest, around the 6:15 mark of the seventh video, you can hear him whapping his forehead—and then he said "That's me faceplanting."
Does this in The King Of Dragon Pass when men from his tribe got themselves cursed by sleeping with an elf in the woods...for the third time.
No One Could Survive That: Lampshaded multiple times in his LP of Mystic Quest, each time with increasing levels of disbelief.
Kleptomaniac Hero: His version of the Avatar from Ultima-This accusation is entirely baseless.
Iolo is actually the thief (not the Avatar) - This is because of a twist in the Ultima VII game engine which doesn't allow the Avatar to steal, but other members of the party can. This leads to a Running Gag.
His Let's Play of Karateka is his shortest—30 seconds from intro to farewell. He plays the actual game for all of 9 seconds, about half of which he stands still at the beginning.
His first stab at Hardcore Mine Craft resulted in him spawning in solid rock—and thus dying in a hurry.
Rage Quit: He did this only once, playing Storm Over The Desert in the Nintendo version of Action 52. The cause of his fury: the game just went on and on and on and ON. It didn't help that the game, just like everything else on the cartridge, sucked.
And there was Evil Empire before that, which kept giving him lives to subject him to more suck. No wonder he felt so much fury when Storm Over The Desert came along and made things worse!
In his X-COM playthroughs, he always names one of his squad members Barry, whose sole duty is to run ahead of the squad and find aliens via getting shot at. After he inevitably dies, another trooper gets named Barry, and the process continues.
In his playthrough of Star Trek: 25th Anniversary, the caption for his video of his first away mission reads "Who wants to take bets as to how many times I can get the redshirt killed on this mission alone?".
During the second Action 52 playthrough, whenever an enemy got stuck in a glitch (which was quite often) "Hello sir, you appear to be stuck in a glitch. Let me help you." -Shoots the enemy-
"Dance, [character], dance! Dance for my amusement!"
"Bzzzt!"
Whenever he describes a game as "manly"... it won't be.
Kiko: "But Avatar, why are we breaking plot consistency?" Iolo, you don't know that I've been breaking the plot since video 1?
Testosterone Poisoning: An inverted lampshading—whenever he describes a game as the "Manliest Game Ever", it will likely be one marketed to young girls, or at least be very cutesy.
Final Doom. Evilution.Last Call. Kiko ends up speechless after he screws up a whopping zero times trying to make it through the opening maze by brute-forcing it.
Through the Eyes of Madness: Both Action 52 playthroughs, especially when he gets to Storm Over The Desert (which never ends).