Ok, what everyone wants is a monster with staying power and good field presence. Here are some of the few that I like.

Spirit Reaper
This card is not destroyed as a result of battle. Destroy this card when it is targeted by the effect of a Spell, Trap, or Effect Monster. If this card successfully attacks your opponent's Life Points directly, your opponent discards 1 card randomly from his/her hand.

Great effect hands down! EVERYONE uses him.

Obnoxious Celtic Guardian
This card is not destroyed as a result of battle when this card battles with a monster with an ATK of 1900 or more. (Damage calculation is applied normally.)

Ok effect as long as your opponent is trying to beat you down with high attack monsters. I hardly ever see this guy anymore.

Twin-Headed Behemoth
If this monster is destroyed and sent to the Graveyard, this monster is Special Summoned with an ATK and DEF of 1000 during the End Phase of the turn. This effect can be used only once during the current Duel.

A good starter if you're just dying to get that tribute monster on the field. Comes back in the end phase. I see very little use with him.

Helios Duo Megistus
This card can be Special Summoned by tributing 1 "Helios-The Primordial Sun" on your side of the field. The ATK and DEF of this card become the number of monsters that are removed from play x 200 points. If this card is destroyed as a result of battle and sent to the graveyard, this card will be Special Summoned during the End Phase, increasing the ATK and DEF by 300 points.

I haven't seen any reviews for this guy. I am currently running one in my deck. He is a light/6/pyro... yeah, I said a 6 star, but he has some potential here. Although the effects that destroy him won't let him come back, the battle part is interesting. And he keeps getting stronger. With all of the DD monsters taking other monsters out of play and the rampant Nobleman of Crossouts, this guy can develope into a decent fighting force. I doubt I'll see anyone else use him, but I just thought I'd throw it out there.

Let me know what all of you guys think. Game on for the Shonen Jump Championships!

Nick

Spirit Reaper is the best card on that list.

Almost everybody plays it.

You missed Different Dimension Dragon- same as Obnoxious CG

And E-Hero Tempest, that is if you care for E-Heros. And I think Cyber Blader also, depending on the number of monsters the opponent has.

And this type of effect has a Spell form you can also include: Heart of Clear Water.

Spirit Reaper
Reaper on the Nightmare
Gyroid
Obnoxious Celtic Guard
Twin-Headed Behemoth
Helios Duos Megistos (not really, only in its own Deck)
Different Dimension Dragon (it's NOT the same, it's more opposite of Guard)
Marauding Captain x2
Goblin King x2
Solar Flare Dragon x2
Soul Absorbing Bone Tower x2
Catnipped Kitty x2
Command Knight x2
Cyber Blader
E. Hero Tempest
Monster equipped with Heart of Clear Water

Good call, one of my favourite cards. Use him on jowgen etc to maintain field advantage.Combo's well with begone knave as well, for even more field advantage.

I tend to use it most with Different Dimension Dragon while using Divine Wrath against monster effects.

Obnoxius is unused because meta is mostly using low attack monsters, and it can be destroyed with spell/trap and if it don't take a monster before with him, its deadroot.

My friend still uses them aganist other players(including me), they are such annoyance thing, until I get Kokki or something other, the tip of that is three(!) marauding captains and 2 Blast with Chain in his/her deck.

Ok I think you mention battle resitance.

Heart of Clear Water
(+) spell card
"If the equipped monster's ATK is 1300 or higher, this card is destroyed. The monster equipped with this card is not destroyed as a result of battle or by the effect of a card that targets the monster. (Damage calculation is applied normally.)"

normal effect, but it doesn't protect from smashing
Rulings
You may equip this card to a monster with ATK 1300 or greater, but it will be immediately destroyed.
If a monster equipped with this card has its ATK increased over 1299, by the effect of "Rush Recklessly", etc., this card is destroyed.
If your "Relinquished" or "Thousand-Eyes Restrict" is equipped with "Heart of Clear Water" and you its effect to equip it with a Monster Card whose ATK is 1300 or higher, "Heart of Clear Water" is destroyed.
Your monster equipped with "Heart of Clear Water" is not destroyed in battle, but you still take any Battle Damage that would be inflicted to your Life Points by the attack.
If you Special Summon a monster with "Premature Burial" or "Call of the Haunted" and then equip that monster with "Heart of Clear Water", the monster will not be destroyed if "Premature Burial" or "Call of the Haunted" is destroyed.
A monster equipped with this card can still be destroyed by effects that do not target, such as the effects of "Fissure", "Dark Hole", "Smashing Ground", or "Torrential Tribute".
A monster equipped with this card cannot be destroyed by a card that targets, but it may still be declared a target. So the opponent may activate "Nightmare Wheel" or "Snatch Steal" targeting your monster equipped with "Heart of Clear Water".
[Re: Battle-Scarred] When an Archfiend is equipped with "Heart of Clear Water", it is not destroyed if it was targeted by "Battle-Scarred" and "Battle-Scarred" is removed from the field.
[Re: Diffusion Wave-Motion] If an opponent's monster is equipped with "Ring of Magnetism", your Level 7 Spellcaster-Type monster selected with "Diffusion Wave-Motion" must attack that monster. If the monster equipped with "Ring of Magnetism" is not destroyed (such as if it is also equipped with "Heart of Clear Water"), you cannot attack any of your opponent's other monsters.
[Re: Injection Fairy Lily] If this card is equipped with "Heart of Clear Water" and you activate its effect to increase its ATK, the "Heart of Clear Water" is immediately destroyed.
[Re: Spirit Reaper] "Spirit Reaper" is destroyed if equipped, including with "Heart of Clear Water".

next

Fox Fire
LV2/Fire/300/200

During the End Phase of a turn when this face-up card was destroyed as a result of battle, Special Summon this card from the Graveyard to your side of the field. This card cannot be Tributed for a Tribute Summon.

not that problem with spirit reaper, but not very good too.

Rulings
In order to activate its effect, "Fox Fire" must be face-up when the attack that destroyed it was declared (like "Atomic Firefly"). If a face-down "Fox Fire" is attacked, its effect is not applied even though it is face-up when destroyed.
While "Skill Drain" is active, you can Tribute "Fox Fire" for a Tribute Summon.
If the opponent controls your face-up "Fox Fire", and it is destroyed as a result of battle, it will be Special Summoned to your (the owner's) side of the field during the End Phase.
[Re: Divine Wrath] You can chain "Divine Wrath" to the effect of "The Creator" (Ignition Effect), "Fox Fire" when it is Special Summoned (Trigger Effect), "Strike Ninja" (Multi-Trigger Effect), and "Homunculus the Alchemic Being" (Ignition Effect).

Gyroid
LV3/Machine/1000/1000

Once per turn, if this card would be destroyed as a result of battle, it is not destroyed. (Damage calculation is applied normally).

I look now that Behemoth had got mechanical friend.

Rulings
You cannot choose when to apply "Gyroid's" effect. If "Gyroid" would be destroyed as a result of battle, its effect is applied (once per turn) whether you want it to be destroyed or not.
If "Gyroid" is destroyed, and is then Special Summoned again that same turn, the effect is reset and its effect will be applied again if appropriate. If "Gyroid" is attacked once, is not destroyed because of its effect, then gets flipped face-down, its effect is reset and will be applied again if attacked that turn.
The effect of "Gyroid" is a Continuous Effect that cannot be chained to (including "Divine Wrath").
If "Gyroid" is attacked for the first time in a turn by "Dark Ruler Ha Des", "Gyroid"'s effect is not negated because it will not be destroyed.
If "Gyroid" is equipped with "Heavy Mech Support Platform", the effect of "Gyroid" will prevent both from being destroyed in battle. If attacked again the same turn and "Gyroid" would be destroyed, "Heavy Mech Support Platform" will be destroyed instead. A third attack will then destroy "Gyroid" normally.
If "Gyroid" is attacked during a Special Battle Phase created by the effect of "Last Turn", and is then attacked again during the regular Battle Phase, it will be destroyed because its effect was already applied once that turn (during the Special Battle Phase).

Marshmallon
LV2/Light/fairy/300/500
When this face-down monster was attacked, inflict 1000 points of damage to your opponent life points.This card is not destroyed as a result of battle.

good card:)

not sure about its stats, because only japanse card.

there are maybe more....I look now how many posts this thread has got within these hours

No need to post every single Netrep ruling for the cards...and Marshmallon is Level 3...

Spirit Reaper is by far one of my favourite cards. I would never have used it if my friend hadn't given it to me, so there's other reasons why I like it as well :P I'd much rather my monster died from effects such as Snatch Steal and Soul Exchange than for it to actually take effect, so for Spirit Reaper's effect I am thankful. It keeps well on the field, and easily gets rid of one of your opponents useful spells or traps to take it down.

One of my other favourites is Reflect Bounder. It's all about playing it at the right time. And, unless someone has a Barrel Behind the Door or Divine Wrath down, no one's going to attack it with say a Blue Eyes :P

They'll just suicide a searcher into it..there are many people would risk taking 1700 just to get rid of Bounder and then get a Reaper or something out of the searcher...