Starting moves and haxes in character? I vote fo eldeath because of sheer cold and status effects.
Freddy doesn’t really have a for sure “lead with this” move due to being entirely based on player-input, although he only has 3 moves to choose from, Mic Toss, Pizza Wheel, and Birthday. Mic Toss and Pizza Wheel are both damaging projectiles that will be pseudo-Danmaku and Birthday is +50% stat amp to all of Freddy's stats
Freddy also has a bunch of chips and bytes,
Reaper bytes, which have a chance to instantly kill Darticuno if they land their projectiles
Has various explosives with large area of effect
Eyebots will be draining Darticuno' health the entire fight.
He has the chip that decreases all of Darticuno' stats.
He has forcefields chips to block attacks.
Has chips that amp his own stats and speed
Plus the moves he does will be mimicked with the mimic chip, meaning Darticuno will have to deal with two of each attack.
Freddy also will be able to resurrect when killed, which means if Darticuno does kill him, he'll get a second chance
He also will be regenerating throughout the fight
Monokuma also doesn't really have a startin move, but his Flight and Telepathy should help Furekuma dodge Darticuno's attacks. He also has Paralysing Gaz which should help