The two most popular right now are Gravekeeper's Spy, and Ryko - Lightsworn Hunter.
A flip effect only works if you flip summon a monster, or if your opponent attacks your face down monster (granted they don't have an effect that negates the activation of a flip effect monster or destroys it without flipping, like Drillroid) Most special summons require the monster to be face up, therefore not letting the flip effect to have a change to activate.
This depends on the specific monster and its abilities. If a monster's summon is negated and the monster destroyed, it is likely that its effect was never able to be activated in the first place. In this case, its effect would never have applied
No, a 'Flip Summon' is a manual change from face-down defence to face-up attack position in one of your main phases. If the monster is flipped from an attack, or by an effect, then this is a Flip, but not a Flip Summon. Therefore regular Flip Effect monsters like Night Assailant will trigger from being attacked, but monsters that require Flip Summoning like Guardian Sphinx will not.
The damage step will go - flip the defending monster, compare ATK and DEF, activate and resolve the flip effect (regardless of whether the monster is considered destroyed by battle bay a stronger attacker) then if the flip monster was considered destroyed, now it actually goes to the graveyard.
No. Flip Effects only activate when the card is flipped, which will happen when Flip Summoned, or when the monster is attacked, or when an effect specifically directs it to be turned face up. Simply destroying a face-down monster, or removing it from play, does not 'flip' it, so Flip Effects will not activate.
Destroying a monster does not flip it. But if a monster is flipped face-up when attacked, and considered destroyed by battle, then the flip effect will still activate.
No. The only time it flips in being destroyed is when it is attacked by a monster. The flip effect will only work if the monster says "FLIP" in all caps and does not say if it is destroyed in battle that its Effect will activate.
Flip effects will activate if flipped manually by Flip Summon, or when attacked. Also must include "FLIP" in all caps for its effect to activate, or say 'when this card is turned face-up'. For example if a monster such as Guardian Sphinx is flipped face up by an attack or an effect (spell, trap or monster), the effect does not activate, because only a Flip Summon triggers it, not a generic flip. When a card effect destroys a face-down monster, the monster is destroyed and flip effect isn't activated because the monster never flips. Mystic Swordsman Lvl. 4 destroys the monster it attacks without flipping it, so a Flip Effect monster attacked by it will not get its flip effect. To summarize, if a FLIP effect monster is attacked while face down, then it will activate. But if it's destroyed by a card effect while face down then it won't activate. Some card effects let you flip monsters face up and let the flip effect activate, like book of taiyou. But others, like ceasefire don't let it activate. If it says 'when this card is flipped face up' then you have to do that manually on your own turn.
Yes. The flip effect itself will activate after damage calculation.
A flip effect only works if you flip summon a monster, or if your opponent attacks your face down monster (granted they don't have an effect that negates the activation of a flip effect monster or destroys it without flipping, like Drillroid) Most special summons require the monster to be face up, therefore not letting the flip effect to have a change to activate.
This depends on the specific monster and its abilities. If a monster's summon is negated and the monster destroyed, it is likely that its effect was never able to be activated in the first place. In this case, its effect would never have applied
Flip effects will activate if flipped manually by Flip Summon, or when attacked. Also must include "FLIP" in all caps for its effect to activate, or say 'when this card is turned face-up'. For example if a monster such as Guardian Sphinx is flipped face up by an attack or an effect (spell, trap or monster), the effect does not activate, because only a Flip Summon triggers it, not a generic flip. When a card effect destroys a face-down monster, the monster is destroyed and flip effect isn't activated because the monster never flips. Mystic Swordsman Lvl. 4 destroys the monster it attacks without flipping it, so a Flip Effect monster attacked by it will not get its flip effect. To summarize, if a FLIP effect monster is attacked while face down, then it will activate. But if it's destroyed by a card effect while face down then it won't activate. Some card effects let you flip monsters face up and let the flip effect activate, like book of taiyou. But others, like ceasefire don't let it activate. If it says 'when this card is flipped face up' then you have to do that manually on your own turn.
The Flip Effect itself is a Trigger, an activation of a monster effect. Herald of Perfection cannot negate the summon itself, but can chain to and negate the actual Flip Effect trigger.
No. A monster that is face down does not 'flip' when destroyed by a card effect, and will not trigger any flip effects.
No, flip effect activate when the card is flipped, which will be by Flip Summon, or being attacked, or flipped by an effect. Simply being destroyed while face down, will not 'flip' the monster.
The effect activates first, and you are actually chaining Trap Hole to that trigger. Trap Hole will resolve first, but it will not stop the monster effect from resolving. Unless a card says it negates a monster's effect, then it is still able to resolve its affect when flip summoned.
No, a 'Flip Summon' is a manual change from face-down defence to face-up attack position in one of your main phases. If the monster is flipped from an attack, or by an effect, then this is a Flip, but not a Flip Summon. Therefore regular Flip Effect monsters like Night Assailant will trigger from being attacked, but monsters that require Flip Summoning like Guardian Sphinx will not.