Is it possible to OHKO a Lugia?

If you had a Lugia at lvl.100 and the multiscale ability, and IVs in every stat, and had an EV spread and nature where needed (so if it took a physical hit then imagine it had 252 HP / 252 Defense, with a defense boosting nature; and if it took a special hit then imagine it had 252 HP / 252 SP. Defense with a SP. defense boosting nature), would it ever die from one hit, at 100% health, from any Pokemon and any attack?

EDIT: Discluding any OHKO moves such as fissure. Sorry, but I already knew about those ones.

Please also put calculations in the answers, thank you!

Pleaselog inorregisterto add a comment.

It has come to my extensive research that I found out a Pokemon can One shot a Lugia with the lugia that fits your Criteria and that would be both Kyurem-B and W

Kyurem-B KO punch : 252+ Atk Choice Band Teravolt Kyurem-B Freeze Shock vs. 252 HP / 252+ Def Lugia: 552-650 (132.6 - 156.2%) – guaranteed OHKO252+ SpA Choice Specs Turboblaze Kyurem-W Ice Burn vs. 252 HP / 252+ SpD Lugia: 488-576 (117.3 - 138.4%) – guaranteed OHKO

I have a clip of Kyurem - W getting an OHKO [Here][1]

252+ Atk Choice Band Mold Breaker Rampardos Head Smash vs. 252 HP / 252+ Def Lugia: 576-680 (138.4 - 163.4%) – guaranteed OHKO

Please note this is due to the effects of Mold Breaker / Teravolt / Turboblaze which in factnegatethe effect of Multiscale.[1]:http://replay.pokemonshowdown.com/thesoraleague-ubers-3189

Yes

With OHKO moves like sheer cold, and stuff like this

Yes, Guillotine bad chance of hitting but it could hithttp://pokemondb.net/move/guillotine