Pend Best Deck
This funny comedian is one of the first good normal summons that adds one of 3 different archetypes.
Performapal Skullcrobat Joker
Elemental HERO Mudballman
Elemental HERO Bubbleman + Elemental HERO Clayman
O
Mathmech Circular
Yugi gives this card to Jaden in episode 1 of GX. It was used by Jaden for a majority of the anime, being a cute mascot and a duel spirit.
Winged Kuriboh
Winda
Gusto, Shaddoll
This card revived the entire pendulum mechanic at the start of MR 4. In the words of a certain someone - "Stick to the gameplan"
Heavymetalfoes Electrumite
Tearlaments Kitkallos
1 "Tearlaments" monster + 1 Aqua monster
This angry link monster really doesn't like trap cards. And for some reason its an @Ignister support card?
Linguriboh
The archetype played by the character Axel Brodie in Season 3 of the GX anime
Volcanic
Avram
World Chalice, Mekk-Knight, Crusadia
This furry friend used to search a powerful archetypal boss monster. Nowdays the best search target is another copy of itself.
Majespecter Racoon - Bunbuku
Chimeratech Megafleet Dragon
1 "Cyber Dragon" monster + 1+ monsters in the Extra Monster Zone
This link 5 accounts for 2 negates on an average Mathmech board. It can also function as an extender if you are missing a body. Make sure not to attack it with Fenrir though!
Firewall Dragon Darkfluid - Neo Tempest Terahertz
The Neo Spacian Archetype was designed by Jaden, but what happened to them to make them real
They were sent to space
Aleister
Invoked, Magistus
This powerful winged beast was widely used by many pendulum decks during the dawn of MR3. Although it is not a pendulum monster, its ability to return to hand lends itself to have good synergy with pendulum summoning.
Destiny HERO - Destroyer Phoenix Enforcer
1 Level 6 or higher "HERO" monster + 1 "Destiny HERO" monster
It's an average level 3 Cybserse-type extender. But at least its a cute anime girl.
Backup Secretary
Joey's iconic boss monster came back as a duel spirit as a villian in this spooky episode of GX
Jinzo
Visas
Scareclaw, Tearament, Kashtira, Mannadium
This pendulum dragon is not something a usual inclusion in pend, but was rather a necessity to out Thunder Dragon Colossus at the time. Nowadays you can see some people coping on this card as a target for Seals in Dragon Link.
Aether, the Evil Empowering Dragon
Elder Entity N'tss
1 Synchro Monster + 1 Xyz Monster
This cyberse serpent saw little plan in Salamngreat as a way to out boss monsters they normally struggle to out such as Winda.
Prohibit Snake
In the Tag Force games, Blair Flannigan returned as an Obelisk Blue student playing this Edison meta archetype as her choice of deck
Lightsworn
Gusto, Zefra, Ritual Beast